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Aromatic, Antiaromatic, or Nonaromatic, Huckel's Rule, 4n+2, Heterocycles, Aromaticity
 
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This organic chemistry video tutorial shows you how to tell if a compound is aromatic, antiaromatic or nonaromatic by using huckel's rule / number of 4n+2 pi electrons, and features of the compound such as whether or not if it's cyclic, conjugated, sp2 hybridized and planar. Organic Chemistry Video Playlist: https://www.youtube.com/watch?v=n5vjCqnVb6s&index=1&t=25s&list=PL0o_zxa4K1BU3gxU8RwqkEET2ilZ80Znj Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/ Examples and practice problems in this video include cyclobutadiene, benzene, cyclooctatetraene, pentalene, 1,3,5-hexatriene, naphthalene, anthracene, tropylium ion, cyclopropenyl cation radical & anion, cyclopentadienyl radical cation & anion, cyclooctarienyl dianion, cyclohexatrienyl cation, radical, & anion, pyrrole, furan, pyran, isoxazole, tub conformation of cyclooctatetraene, heterocycles such as thiophene, 1,3-thiazole, pyrimidine, purine, pyrylium ion, & imidazole. This video also helps you to see which nitrogen atom is basic and which is not. It clearly helps you to see the difference in aromaticity vs antiaromaticity.
Are Lone Pairs in Hybrid Orbitals? sp2 confusion!
 
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This lesson discusses how to figure out if lone pairs of electrons are in hybrid orbitals or p-orbitals. This relates heavily to resonance and aromaticity lectures. Learn with us online! https://www.udemy.com/user/matthew-tomney Follow us on social media: https://twitter.com/ChemComplete https://www.facebook.com/chemcomplete
Views: 1938 ChemComplete
How to Check Lone Pairs on any atom ? - By Vineet Khatri
 
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Checking lone pair on any atom is very easy. Any Time Padhai Academy provides awesome content for students Preparing for IIT JEE It is founded by Vineet Khatri who is Legend in IIT JEE Training. A graduate from IIT Roorkee also cleared IAS mains in 1st attempt. Follow VK sir on Facebook https://www.facebook.com/vineetkhatrivk/ Please Like ATP Academy on Facebook https://web.facebook.com/Any-Time-Padhai-Academy-1034624919960861/
Aromaticity and Huckel's Rule
 
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Looking for some more organic chemistry practice? Try http://www.studyorgo.com and ace that test. Use the coupon code “Dave” and save 20% right away! Why do some molecules smell good? No, they're not cookie molecules. They probably have a fully conjugated polyunsaturated ring system. Aromaticity, as it turns out, just has to do with these rings as well as Huckel's rule. Learn Organic Chemistry the easy way with Professor Dave! Subscribe: http://bit.ly/ProfDaveSubscribe [email protected] http://patreon.com/ProfessorDaveExplains http://facebook.com/ProfessorDaveExplains http://twitter.com/DaveExplains http://instagram.com/DaveExplains General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths Biology Tutorials: http://bit.ly/ProfDaveBio American History Tutorials: http://bit.ly/ProfDaveAmericanHistory
Views: 126275 Professor Dave Explains
What is the hybridization of each atom in this molecule?
 
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More free chemistry help videos: http://www.nathanoldridge.com/chemistry-videos.html This is the easiest way to figure out how each atom's orbitals are hybridized.
Views: 178808 chemistNATE
Determining the number of lone pairs of atoms (central atom) in a molecule (Part  1)   AS Chemistry.
 
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Determining the number of lone pairs of atoms(central atom) in a molecule(Part -1) - AS Chemistry You can find Chemistry videos from 9-12 class and also daily tips and tricks of Organic Chemistry. For daily updates, Subscribe this channel. https://web.facebook.com/Asan-Chemistry-868693209901309/
Views: 5145 Sohail Iqbal
Aromatic heterocycles I | Aromatic Compounds | Organic chemistry | Khan Academy
 
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The aromaticity of heterocycles (rings containing one or more non-carbon atoms).Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/aromatic-stability/v/aromatic-heterocycles-ii?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Missed the previous lesson? https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/aromatic-stability/v/aromatic-stability-v?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them. We will also think about how those reactions are occurring on a molecular level with reaction mechanisms. Simply put, organic chemistry is like building with molecular Legos. Let's make some beautiful organic molecules! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Organic Chemistry channel: https://www.youtube.com/channel/UCNKPjijOc0WEJ7DIV_Vay3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Pyridine and Pyrrole
 
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This webcast contrasts two common heteroaromatic compounds, pyridine and pyrrole. In particular, we want to understand why pyridine is considered electron deficient, while pyrrole is considered electron rich.
Views: 56760 Michael Evans
Aromatic heterocycles II | Aromatic Compounds | Organic chemistry | Khan Academy
 
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The aromaticity of pyrrole, imidazole, and thiophene. Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/electrophilic-aromatic-substitution/v/electrophilic-aromatic-substitution-mechanism?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Missed the previous lesson? https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/aromatic-stability/v/aromatic-heterocycles-i?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them. We will also think about how those reactions are occurring on a molecular level with reaction mechanisms. Simply put, organic chemistry is like building with molecular Legos. Let's make some beautiful organic molecules! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Organic Chemistry channel: https://www.youtube.com/channel/UCNKPjijOc0WEJ7DIV_Vay3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Aromaticity of Heterocycles
 
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Watch more of this topic at ► http://bit.ly/28JOwKQ Download this PDF: http://bit.ly/28KD1V0 GET MORE CLUTCH! VISIT our website for more of the help you need: http://bit.ly/28JOhzP SUBSCRIBE for new videos: http://cltch.us/1axA33X --- LET'S CONNECT! Facebook: http://cltch.us/1JLgiSZ Twitter: http://cltch.us/1NLcKpu Instagram: http://cltch.us/1If5pb7 Google+: http://cltch.us/1E34o85 Clutch Prep = Textbook specific videos to help you pass your toughest science classes.
Views: 5961 Clutch Prep
Hybridization of nitrogen, oxygen and sulfur
 
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Tutorials of selected topics of IBH chemistry.
Views: 31940 Rostam Afshinnekoo
NO2F - Lewis Structure, Polar or Nonpolar, Molecular Geometry, Formal Charge, Hybridization, Resonan
 
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This video discusses how to draw the lewis structure of NO2F and if it's polar or nonpolar. In addition, this video mentions the molecular geometry, hybridization, bond angle, formal charge, and resonance of NO2F.
Views: 5843 Math & Science 2024
Organic Chemistry 51B. Lecture 23. Aromaticity.
 
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UCI Chem 51B Organic Chemistry (Winter 2013) Lec 23. Organic Chemistry -- Aromaticity View the complete course: http://ocw.uci.edu/courses/chem_51b_organic_chemistry.html Instructor: David Van Vranken, Ph.D. License: Creative Commons BY-NC-SA Terms of Use: http://ocw.uci.edu/info. More courses at http://ocw.uci.edu Description: This is the second quarter of the organic chemistry series. Topics covered include: Fundamental concepts relating to carbon compounds with emphasis on structural theory and the nature of chemical bonding, stereochemistry, reaction mechanisms, and spectroscopic, physical, and chemical properties of the principal classes of carbon compounds. This video is part of a 26-lecture undergraduate-level course titled "Organic Chemistry" taught at UC Irvine by Professor David Van Vranken. Organic Chemistry (Chem 51B) is part of OpenChem. http://ocw.uci.edu/collections/open_chemistry.html Recorded on March 8, 2013. Index of Topics: 00:11- Lake Elsinore toddler bitten by rattlesnake 00:54- Antivenom 05:00- 16.13: Drawing Bridged Bicyclic Products of Diels-Alder Reactions (corrected slide) 06:25- 17.7: Huckel's Rule-Recognizing Anti-aromatic Compounds 12:43- 17.7: Recognizing Anti-aromatic Compounds 18:13- 17.8C: How Do I Know if an atom is planar? 19:05- 17.8C: Aromatic Ions 26:29- 17.8C: How Do I Know if an atom is planar, revisited 29:56- 17.8D: Aromatic Heterocycles-Which lone pairs do I count? 38:45- 17.8B: Other Aromatic Compounds Required attribution: Vranken, David Van. Organic Chemistry 51B (UCI OpenCourseWare: University of California, Irvine), http://ocw.uci.edu/courses/chem_51b_organic_chemistry.html. [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License (http://creativecommons.org/licenses/by-sa/3.0/us/deed.en_US).
Views: 18790 UCI Open
Molecular Geometry: Trigonal Planar, Tetrahedral, Linear, Octahedral, Bent
 
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This video discusses the molecular geometry of multiple molecules. Here is a list of molecules that are discussed in this video: Linear: CO2, CS2, BeF2, BeH2 Bent: H2O, H2S, H2Se, H2Te, SO2, SeO2, TeO2, O3 Trigonal Planar: BH3, BF3, AlCl3, GaF3 Tetrahedral: CH4, SiBr4, CF4, SnCl4, GeI4 Trigonal Pyramidal: NH3, NF3, PBr3, AsCl3 Trigonal Bipyramidal: PBr5, PCl5, SbF5, AsI5 Octahedral: SF6, SeBr6, IF6+, ICl6+ Square Planar: XeF4 Square Pyramidal: IF5 T-shaped: IF3 SeeSaw: SF4
Views: 18555 Math & Science 2024
Tellurium Chemistry: Aromatic Polycation Te4(2+)
 
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Much like our experiment with Selenium, Tellurium forms polycations in conc. H2SO4 as well. In this case, the color is red. Back then we had an 8-membered crown-shaped ring. Tellurium, however, forms a different polycation under the same conditions. This time a square is formed which consists of 4 Tellurium atoms. As the system contains 6 pi-electrons* and it is flat we call this a Hueckel aromatic compound. Besides Te4(2+), S4(2+) and Se4(2+) can form under different conditions as well and those are aromatic, too. Why does this compound form so fast in comparison to a sulfur polycation which requires Oleum to form ? Sulfur is much more electronegative and the cation possesses a much higher acidity. Thus, it is easier to react it in H2SO4 and no more reactive reagent is required. There are multiple ways to make the Te4(2+) and depending on the method and counterion it can further polymerize forming Te8(4+) as dimer, or [Te4(2+)]x as polymeric chain where the Te-squares are connected via the vertices. Note: * If you are unsure how to determine the amount of electrons here, this is the official calculation to this problem: - Number of valence electrons = 4 x 6 = 24 from this some electrons have to be subtracted - Number of sigma-electrons = 8 - Amount of lone pairs 2 x 4 = 8 - Charge = 2 If you subtract these 18 from 24 you get 6 pi-electrons in the system. Next to determine aromaticity you can use the Frost-Musulin-diagram. Take the shape of your ring and place it on a vertex. Each vertex is now an energy level. If you take benzene for example you will see that there are two times two vertices on the same height. Those are degenerate energy levels. Each of these "layers" have to be either completely empty or fully filled to yield a stable compound. Unpaired situations will lead to reactive radicals, which is why there are aromatic, anti-aromatic and non-aromatic compounds and the Hueckel-rules exist. Ok so we take our square and place it on an edge we get 4 energy levels (where each vertex is). Two of those will be at the same hight and therefore be degenerate. Now we know that we have 6 pi-electrons and each energy level can be filled with two electrons. This will fill the first and the second degenerate "layer" which is a stable situation making it aromatic. It is also flat, which is a requirement for aromatic compounds as well.
Views: 620 Colorful Chemistry
Aromaticity in heterocycles
 
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A very quick video to explain how the electronegativity of the heteroatom within a heterocycle can result in different 5 membered ring heterocycles displaying varying degrees of aromaticity.
Practice Problem: Aromaticity
 
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Which ones are aromatic? Take your pick! Don't forget about Huckel's rule. And don't forget to try Skooli for all your online academic tutoring needs! Enter the code "professordave" for one free hour: http://skoo.li/1q2FOOB Subscribe: http://bit.ly/ProfDaveSubscribe [email protected] http://patreon.com/ProfessorDaveExplains http://professordaveexplains.com http://facebook.com/ProfessorDaveExpl... http://twitter.com/DaveExplains General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths Biology Tutorials: http://bit.ly/ProfDaveBio American History Tutorials: http://bit.ly/ProfDaveAmericanHistory
Trick to find out lone pair and polarity of compound
 
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In this a very fine trick has been discussed to find lone pair of a compound as well as the polarity of a compound(whether the compound is polar or non-polar).
Views: 60309 Vishal Aaditya Kundu
Sulfonation | Aromatic Compounds | Organic chemistry | Khan Academy
 
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Sulfonation of benzene. Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/electrophilic-aromatic-substitution/v/friedel-crafts-alkylation?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Missed the previous lesson? https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/electrophilic-aromatic-substitution/v/nitration?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them. We will also think about how those reactions are occurring on a molecular level with reaction mechanisms. Simply put, organic chemistry is like building with molecular Legos. Let's make some beautiful organic molecules! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Organic Chemistry channel: https://www.youtube.com/channel/UCNKPjijOc0WEJ7DIV_Vay3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Resonance Structures of NO3- (Nitrate ion)
 
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There are three resonance structures for nitrate (NO3-) ... it depends which oxygen you choose to be double-bonded to the nitrogen. Resonance doesn't mean there's a double bond and two singles ... it means all the bonds are equivalent and somewhere in-between single/double bond status Check me out: http://www.chemistnate.com
Views: 130682 chemistNATE
Isoelectric Point of Amino Acids with MCAT Shortcut
 
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http://leah4sci.com/aminoacids presents: Isoelectric Point of Amino Acids detailed tutorial with time-saving MCAT Shortcut Is your MCAT just around the corner? Grab a free copy of my ebook "MCAT Exam Strategy - A 6 Week Guide To Crushing The MCAT" at http://mcatexamstrategy.com/ebook This is video 6 in the MCAT amino acids tutorial video series. Learn how to quickly find the isoelectric point of any given amino acid as well as a time-saving shortcut for amino acids with 3 pKa values. Also learn how to verify your results quickly. Referenced in this video: MCAT Math series: http://leah4sci.com/mcatmath Catch this entire video series along with my amino acid cheat sheet, tutorials and practice quiz on my website: http://leah4sci.com/aminoacids Need more help? I offer private online MCAT tutoring. Details http://leah4sci.com/mcat-tutoring/ Have questions? Leave a comment below this video or hit me up on social media: Twitter: http://twitter.com/leah4sci Facebook: https://www.facebook.com/mcatexamstrategy Google+: https://plus.google.com/+LeahFisch/
Views: 69225 Leah4sciMCAT
Aromaticity - Heterocycles II
 
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Aromaticity - Heterocycles II
Elimination vs substitution: reagent
 
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How to figure out if a reagent will act as a strong or weak base or a nucleophile in a reaction.
Organic Chemistry Resonance Structures - Rules, Practice Examples, Formal Charge, Drawing Compounds
 
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This organic chemistry video tutorial shows you how to draw resonance structures. It provides the rules that you need to know along with plenty of examples and practice problems. It shows you how to calculate the formal charge of an element in a compound and it shows you how to determine the major resonance contributor and the minor resonance structure by identifying which resonance structure is more or less stable using principles such as electronegativity, atomic and ionic size, formal charge separation, aromaticity and octet sastifactory requirements. This video lecture explains why secondary carbocations are more stable than primary carbocations and why the reverse is true in the case of carbanions. It explains this concept using principles such as the inductive effect, hyperconjugation, and the presence of electron donating groups. This video lecture contains plenty of notes and examples for you to remember whenever your drawing resonance structures.
Lewis Structure (+VSEPR) for H2CO
 
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Formaldehyde (Methanal, H2CO) is a trigonal planar molecule, AX3 geometry, 120 degree bond angle. Here is its Lewis Structure and VSEPR shape. Check me out: http://www.chemistnate.com
Views: 8204 chemistNATE
Electron Groups
 
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Views: 890 Corey Beck
Solve any Bond angle Question in 30 seconds- By Vineet Khatri
 
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Join AOTS ( India's 1st JEE Test series with Video solutions )by registering on link given below https://www.anytimepadhai.com It is founded by Vineet Khatri who is Legend in IIT JEE Training. A graduate from IIT Roorkee also cleared IAS mains in 1st attempt. Follow VK sir on Facebook https://www.facebook.com/vineetkhatrivk/ Please Like ATP Academy on Facebook https://web.facebook.com/Any-Time-Padhai-Academy-1034624919960861/
Views: 148824 Any Time Padhai Academy
C6H6 Lewis Structure: How to Draw the Lewis Structure for C6H6 (Benzene)
 
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A step-by-step explanation of how to draw the C6H6 Lewis Dot Structure (Benzene). There are several ways to draw the C6H6 Lewis structure. The most common is to form a ring with the six carbon atoms. You'll notice that there are not many hydrogen atoms in the structure. You'll need to form alternating double bonds in order to fill the outer shells of the atoms and only use 30 valence electrons. There are two other (probably more than that) ways to draw the Lewis structure for C6H6. These are equally valid structures and obey the octet rule while using only 30 valence electrons. For the C6H6 Lewis structure, calculate the total number of valence electrons for the C6H6 molecule (C6H6 has 30 valence electrons). After determining how many valence electrons there are in C6H6, place them around the central atom to complete the octets. Be sure to use the number of available valence electrons you found earlier.
Views: 51485 Wayne Breslyn
How Many Electrons Can Nitrogen Have?
 
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It can donate this electron pair to form a coordinate bond hybridization of n is 1s 2 2s 2p 3. Easy notecards page 13 of 18 easynotecards print_list 7153 in the figure above, how many unpaired electrons does phosphorus have its valence shell? 63. A double bond would place 7 around the nitrogen, and a triple 9 nitrogen. Each shell can contain only a fixed number of electrons the first hold up to two electrons, second eight (2 6) third in chemistry, lone pair refers valence that are not shared with another atom and is sometimes called non bonding. How many protons, neutrons violations of the octet rule chemistry libretexts. How many electrons can nitrogen have? Youtube. They can be identified by using a lewis structure. Looking at the picture, you can see there are two electrons in shell one and five 25 aug 2017. They can be metals (e. Predicting numbers of bonds formed here are a few examples that show how formulas can be predicted. Many elements have different isotopes. How many protons, neutrons, and electrons does nitrogen have an atom of nitrogen, by definition, has exactly 7 protons. However, their charges would be much higher. It would be na 7 and cl, which is much less stable than molecular compounds have definite formulas because nonmetal atoms a number of valence electrons limited capacity to accept. Chem4kids nitrogen orbital and bonding info. Counting pi electrons and involved in aromaticity. Nitrogen needs 3 electrons to complete an octet nitrogen and phosphorus each have five in their outer shells, which can hold up eight. Carbon, hydrogen, oxygen, nitrogen). The shells correspond with the principal quantum numbers (n 1, 2, 3, 4 ) or are labeled alphabetically letters used in x ray notation (k, l, m. 29 aug 2015 nitrogen has 5 electrons in its n 2 (outer) shell. Although the octet rule could have been satisfied if chlorine gave up all seven of its valence electrons and sodium took them. Iron, copper, sodium magnesium) or non metals (e. Electron pairs are therefore considered lone if two electrons found in energy levels around the nucleus as shown diagram representing a carbon atom with 6 protons, neutrons and. Therefore, it can form three bonds by sharing its electrons. General chemistry octet rule and exceptions wikibooks, open bond counting predicting numbers of bonds. How many valence electrons does nitrogen have? have to gain when it becomes an the atomic number of is 7. In the figure above how many electrons does nitrogen have in its exceptions to octet rule michael blaber. As the charge of an electron is exactly opposite a proton, neutral atom any element will have same number electrons as protons. Three unpaired electron of p orbital forms three bond and fourth one is formed by lone pair that why it shows 3 5 oxidation state with high electronegative atom than nitrogen3 years agoshahid chamran university ahvaz ''14 mar 2015. Are these molecules aromatic? Solutionsall atoms are sp2. Lone pairs are found in the outermost electr
Views: 57 Aile Aile
How to find hybridization of an atom
 
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This is a tutorial video to find hybridization of an atom in a given compound. I hope it's helpful.
Views: 77031 Paras Pageni
Counting Electrons in Pi Systems
 
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Introducing heteroatoms into cyclic pi systems forces us to consider how many electrons each atom will contribute to the pi electron count. Learn how to count pi electrons based on atom type and connectedness in this video.
Views: 22543 Michael Evans
Aromaticity Practice Problems
 
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How do I tell if a compound is aromatic or not? In this video, Dr. KP works through seven practice problems on aromaticity, with detailed explanations.
Views: 1296 Molecular Memory
Drawing Skeletal Structures or Bond-Line Notations of Organic Molecules (Organic Chemistry Basics)
 
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Are you struggling with organic chemistry? Download my free ebook "10 Secrets To Acing Organic Chemistry" here: http://leah4sci.com/orgo-ebook/ This http://leah4sci.com/organicchemistry/ tutorial teaches you how to draw organic molecules using line structure or skeletal structures, how to read/understand and count the atoms in this new structure, and how to convert back from a skeletal structure to a Lewis Structure or Condensed Molecule Structure Many students struggle with organic chemistry because they try to memorize rather than understand the concepts and mechanisms. My goal is to break down the concepts so that you can understand and apply them to your homework, quizzes and exams If you enjoyed this video please show your appreciation by giving me a thumbs up, and subscribe to my channel for quick access to all new tutorial uploads I will be creating quizzes to help you study the concepts in this quiz. These will be available on my website shortly Find me online: Website: http://leah4sci.com Facebook: http://facebook.com/leah4sci Twitter: http://twitter.com/leah4sci Please post questions/comments below or contact me via my website: http://leah4sci.com/contact/
Views: 168767 Leah4sci
hybridization of oxygen and nitrogen
 
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visualizing the hybridization of nitrogen and oxygen, including the lone pairs, in organic chemistry
Views: 496 Rick Pires
Chem 201. Organic Reaction Mechanisms I. Lecture 19. Sulfur Chemistry
 
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UCI Chem 201 Organic Reaction Mechanisms I (Fall 2012) Lec 19. Organic Reaction Mechanism -- Sulfur Chemistry View the complete course: http://ocw.uci.edu/courses/chem_201_organic_reactions_mechanisms_i.html Instructor: David Van Vranken, Ph.D. License: Creative Commons BY-NC-SA Terms of Use: http://ocw.uci.edu/info. More courses at http://ocw.uci.edu Description: Advanced treatment of basic mechanistic principles of modern organic chemistry. Topics include molecular orbital theory, orbital symmetry control of organic reactions, aromaticity, carbonium ion chemistry, free radical chemistry, the chemistry of carbenes and carbanions, photochemistry, electrophilic substitutions, aromatic chemistry. Organic Reaction Mechanisms I (Chem 201) is part of OpenChem: http://ocw.uci.edu/collections/open_chemistry.html This video is part of a 20-lecture graduate-level course titled "Organic Reaction Mechanisms I" taught at UC Irvine by Professor David Van Vranken. Recorded December 5, 2012. Required attribution: Van Vranken, David Organic Reaction Mechanisms 201 (UCI OpenCourseWare: University of California, Irvine), http://ocw.uci.edu/courses/chem_201_organic_reactions_mechanisms_i.html [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License.
Views: 6895 UCI Open
UK CHE 107--VSEPR Theory
 
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Honors Project by the Neutrons on the Block for CHE 107-004 at the University of Kentucky. Group members: Alex Young, Trae Brooks, Zach Griffith, Miranda Maier, Erin Daugherty, and Alex Norton. Sources: Tro, Nivaldo J. Chemistry: A Molecular Approach. Third ed. Upper Saddle River, NJ: Pearson/Prentice Hall, 2013. Print. Granger, Jill. "The Chemistry of Water." witcombe.sbc.edu. Sweet Briar College. Web. 28 April 2014. http://witcombe.sbc.edu/water/chemistrystructure.html Background music: Mohr, Topher and Elena, Alex. "Keep Dreaming." YouTube audio library. Web. 28 April 2014. https://www.youtube.com/watch?v=MlL4vFW8yM4 Blooper sound: https://www.freesound.org/people/slappy13/sounds/151779/ Picture: http://www.dichotomistic.com/images/water%202.gif
Views: 118 Alexander Young
Hybridization and Geometry - ASPARTAME (PART 3)
 
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Analysis of lone pairs, e- group geometries, molecular geometries, bond angles, and hybridization states of multiple central atoms on large organic molecules - a good exam question
Views: 471 CHEM1210B PROF
Common mistakes when drawing resonance structures | Organic chemistry | Khan Academy
 
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How to avoid common mistakes when drawing resonance structures. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/organic-structures/formal-charge-resonance/v/resonance-localized-delocalized?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Missed the previous lesson? https://www.khanacademy.org/science/organic-chemistry/organic-structures/formal-charge-resonance/v/resonance-benzene-phenoxide?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them. We will also think about how those reactions are occurring on a molecular level with reaction mechanisms. Simply put, organic chemistry is like building with molecular Legos. Let's make some beautiful organic molecules! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Organic Chemistry channel: https://www.youtube.com/channel/UCNKPjijOc0WEJ7DIV_Vay3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Resonance Structures
 
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An introduction to resonance structures. View more lessons: http://www.educreations.com/yt/2207522/?ref=ytd
Views: 223 educreations
Organic Chemistry Functional Groups - How to Understand and Memorize Functional Groups
 
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Organic Chemistry Functional Groups broken down to help you understand and memorize structure and formula by http://leah4sci.com This video breaks down the common functional groups in organic chemistry, from the 'R' group to carbon chains, amines, alkyl halides, alcohols, thiols, ketones, aldehydes, carboxylic acids, esters, amides, phenyl vs phenol and more. Learn what the functional groups look like, how to identify them, and tricks to help you memorize groups for organic chemistry. Struggling with Organic chemistry? Grab my free ebook '10 Secrets To Acing Organic Chemistry' http://leah4sci.com/orgo-ebook/ Resources mentioned in this video: - Functional Groups Cheat Sheet http://leah4sci.com/organic-chemistry-functional-groups-cheat-sheet/ - Functional Groups Practice Quiz (coming soon) - Pencil Trick to identify primary/secondary/tertiary/quaternary groups http://leah4sci.com/pencil-trick-for-classifying-primary-secondary-and-tertiary-carbon-atoms/ - Naming Organic Compounds video series: http://leah4sci.com/naming-organic-compounds-iupac-nomenclature/ I offer private online tutoring for organic chemistry and MCAT prep. Details on my website: http://leah4sci.com/organic-chemistry-tutor/ for questions and comments, find me on social media here: Facebook: https://www.facebook.com/Leah4sci Twitter: https://twitter.com/Leah4Sci Google+ https://plus.google.com/u/0/+LeahFisch Pinterest: http://www.pinterest.com/leah4sci/
Views: 272148 Leah4sci
Drawing inorganic reactions
 
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This is the introduction of BKChem. Free, portable, and open-source chemical structure drawing program. Written in Python. http://bkchem.zirael.org/
Views: 1166 MrMacmarvin
Four easy methods to calculate Hybridization ( Important of NEET & JEE )
 
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Hello friends this is SURYA DEV CHATURVEDI . Well Come To IITians Education. Hybridization is very important topic for JEE & NEET. There are many students which have difficulty to find hybridization so, I explain four different methods to find hybridization easily . Hybridization : It is the mixing of two or more atomic orbitals of almost same energy and the formation of same number of new orbitals of same energy & same share called Hybrid orbitals and the phenomena is called Hybridization. Important Features Of Hybridization 1)The number of hybrid orbitals is equal to the number of atomic orbitals that get hybridized. 2)The hybridized orbitals are always same in energy & shape. 3)The hybrid orbitals are more effective in forming stable bonds than the pure atomic orbitals. 4)These hybrid orbitals are directed in a shape in some preferred direction to have minimum repulsion between electron pairs and also gives geometry to the molecules. FORMULA OF HYBRIDIZATION - X = S.A + 1/2 ( E – V ± C) S.A.= Surrounding atoms. E = No. of electrons present in valence shell of a central atom V = Valency of surrounding atom. C = Opposite charge. other method HYBRIDIZATION = sigma bonds + lone pairs If You Like The Video Then Like It And Share It With Your Friends & Not Forget To Subscribe our Channel. THANKS FOR WATCHING.
Views: 126 Logical Programmer
How Many Resonance Structures Can Be Drawn For So2?
 
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How can you determine the resonance structure of so2? Quorahow many equivalent forms be drawn for so2 and hybrid structures o3, so3, so2, co3 preferred (po4)3 chemistry more on dot sulfur dioxide (video) google books result. These two bonds can switch over giving resonance structures as shown below so2 my teacher said that there were 3 and asked us to draw the 2 where s shares 8 electrons. In the last structure that has a formal charge, there is single s o bond and double. 10 feb 2015 sulfur dioxide, or so2, has two resonance structures which contribute equally to the overall hybrid structure of the molecule. What are the resonance structures for so2? Socratic. How many resonance structures does so2 have? structure It only has one what are the for so3? Quora. The molecule has a bent structure due to the lone pair of electrons on s. Edit resonance and hybrid structures of o3, so3, so2, co3 2, so4 po4 2,no3 none these 'resonance structures' can be prepared in the laboratory. A) arrange these species in order of 10 feb 2013 so2, resonance structure draw a lewis for dipole moment sulphur dioxide structure, so2 2. Draw all possible resonance structures for so2, so. Mar 2015 also, resonance structure can only occur with the 'best' lewis so2 how to draw for (sulfur dioxide) originally answered what is of so3 molecule? The answer given by greg many structures be drawn sulfur trioxide (so3)? What an structure? i'm not sure you determine it as much guess. Let's draw the first two lewis structures for so2 29 jun 2014 when 02 or more that differ only in arrangement distribution of electron can be drawn a given molecule ion is called as 28 apr 2015the question on my quiz asks to dot structure and show any because sulfur third period element, it expand its valence shell bah, i think i'm rambling too much let us return. What are the resonance structures for so2? Socratic socratic what so 2 url? Q webcache. Googleusercontent search. For problem 5b in the 2012 midterm, so2 is drawn with one double could have only most stable structure and shown that 13 mar 2015. Does so2 have a resonance structure? So2 lewis structure with formal charge, resonance, molecular structures chemical forums. Lewis structures, formal charge, and resonance nshs science. Draw all possible resonance structures for so2, so3 2, and so. However, a third lewis structure can be drawn for so2 which is more stable in theory, but doesn't quite match experimental data. There are 3 possible ways of arranging the atoms s o o, and cyclicformal charges indicate equivalent (resonance) structures3rd row atom can have 5 or 6 electron pairs5 draw dot structure c f bonds much more polar than h what is hybridization valence electrons on sulfur in so2? Sp2, trigonal how many resonance structures be drawn from o3? 2. Structures, formal charge, and resonance nshs science. The octet rule in the following compounds and draw their lewis structures? . Use the resonance structures to solve problems below.
Views: 464 Trix Trix
How Many Resonance Structures Can Be Drawn For So2?
 
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In the last structure that has a formal charge, there is single s o bond and double. To determine the lewis structure 1. Represented by a single lewis structure. The actual structure of so2 is a resonance hybrid all my teacher said that there were 3 and asked us to draw the following 2 structures where s shares 8 electrons. We say that these are resonance structures of so2. We have three different structures, differing only in the locations of electrons. Chemistry for engineering students google books result. Ruth montag chapter 9 part 2 mastering chemistry flashcards 7. Sketch the bond framework of acetate ion and indicate p orbitals that are involved in bonding. S1 the bonding situation in so2 is described through resonance structures, which are separated by a double headed arrow how many forms can be drawn for so2? Use method presented section 5. None of these structures can many atoms form monatomic ions by either losing electrons or gaining lewis suggested that nonmetal acquire a noble gas configuration sharing to covalent bond. However, a third lewis structure can be drawn for so2 which is more stable in theory, but doesn't quite match experimental data. Googleusercontent search. Er 3 atoms x 8 electrons atom 24 electronsve 6 from sulfur each oxygen (2)(6) 18 valence electronslewis structure must contain nine pairs of electronssp jun 2014 approximate bond angles about cthe actual the acetate ion is a weighted combination all resonance structures. So2 lewis structure with formal charge, resonance, molecular structures, and resonance nshs science. He phenomenon of resonance was put forward by heisenberg to explain the properties certain covalent molecules. What are the resonance structures for so2? Socratic socratic what so 2 "imx0m" url? Q webcache. Due to the movement of pair electrons s loses an electron and develops a charge 1 popular questions from chemical bonding molecular structure shreyansh jain what is inert effect? Explain in detail with examples ] rachamadugu vineesha why ko2 paramagnetic? ? ? ? Laeneshvar co gas more poisonous than co2 show questionsabout us i'm not sure you can determine it as much guess. How many resonance structures does so2 have? Structure for sulfur dioxide (video) and hybrid of o3, so3, so2, co3 covalent bondingresonance. In the position of electrons are which statements below is true for lewis structure so2 molecule that obeys octet rule? Hints a. Some molecules lend themselves two or more dot structures. However, that's ok, because scan expand its octet. Draw 1 resonance structure where s shares 10 electrons. A lewis structure of so2 is shown to the. How many electrons are involved with this is not the most favorable bonding pattern for desired resonance structurethe arrangement of valence in species adequately. Taking a hint from the sulfite anion and fact that oxygen is only likely to form negative ions, we are probably now have structure in which s has ten valence electrons. Solved (a) draw the resona
Views: 23 new sparky
4. Electronegativity, Bond Strength, Electrostatics, and Non-Bonded Interactions
 
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Freshman Organic Chemistry II (CHEM 125B) A student provides insight on fractional-order rate laws. Bonds involving atoms with lone-pair electrons are weakened by electron-pair repulsion. Electronegativity differences between atoms make ionic dissociation (heterolysis) easier and radical dissociation (homolysis) harder, although Pauling's definition of electronegativity makes the logic of the latter effect somewhat circular. The course transitions from free-radical reactions to ionic reactions by discussing solvent properties, in particular the electrostatic properties of alkyl halides and alkanes.. 00:00 - Chapter 1. Generalization of Fractional-Order Rate Laws 03:44 - Chapter 2. Electron-Pair Repulsion and Bond Dissociation Energy 07:48 - Chapter 3. Heterolysis and Homolysis - Pauling's Electronegativity and Bond Dissociation Energy 27:04 - Chapter 4. Alkyl Halides -- Electrostatics, Non-bonded Interactions, and Solvent Properties Complete course materials are available at the Open Yale Courses website: http://oyc.yale.edu This course was recorded in Spring 2011.
Views: 5196 YaleCourses
How to find hybridisation of atoms in compounds
 
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Easiest method to find hybridisation of atoms in compounds.It is very helpful for students of class 11 and 12
Views: 119 Lissy Sanoj
Organic Chemistry 51B. Lecture 24. Electrophilic Aromatic Substitution.
 
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UCI Chem 51B Organic Chemistry (Winter 2013) Lec 24. Organic Chemistry -- Electrophilic Aromatic Substitution -- Part 1 View the complete course: http://ocw.uci.edu/courses/chem_51b_organic_chemistry.html Instructor: David Van Vranken, Ph.D. License: Creative Commons BY-NC-SA Terms of Use: http://ocw.uci.edu/info. More courses at http://ocw.uci.edu Description: This is the second quarter of the organic chemistry series. Topics covered include: Fundamental concepts relating to carbon compounds with emphasis on structural theory and the nature of chemical bonding, stereochemistry, reaction mechanisms, and spectroscopic, physical, and chemical properties of the principal classes of carbon compounds. This video is part of a 26-lecture undergraduate-level course titled "Organic Chemistry" taught at UC Irvine by Professor David Van Vranken. Organic Chemistry (Chem 51B) is part of OpenChem. http://ocw.uci.edu/collections/open_chemistry.html Recorded on March 11, 2013. Index of Topics: 00:36- Natural Does Not Mean Safe 01:43- Molecular structure of allantoin CHAPTER 18-Electrophilic Aromatic Substitution=E.A.S. 04:00- Chapter 18 Introduction 08:51- 18.1: Five Important Electrophilic Aromatic Substitution Reactions 14:39- 18.2: Two-Step Mechanism for E.A.S. 22:33- 18.3: Dalogenation with FeX3 and X2 31:05- 18.4: Nitration with HNO3 and H2S04 39:48- 18.4: Sulfation with SO3 and H2SO4 45:56- 18.5: Friedel-Crafts Acylation with RCOCl and AlCl3 Required attribution: Vranken, David Van. Organic Chemistry 51B (UCI OpenCourseWare: University of California, Irvine), http://ocw.uci.edu/courses/chem_51b_organic_chemistry.html. [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License (http://creativecommons.org/licenses/by-sa/3.0/us/deed.en_US).
Views: 19332 UCI Open
Key Arrow Patterns in Drawing Resonance Structures (Vid 2/4)
 
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http://leah4sci.com/Resonance Presents: Key Arrow Patterns in Drawing Resonance Structures - rules to avoid, and rules to follow. Need help with orgo? Download my free guide '10 Secrets to Acing Organic Chemistry' HERE: http://leah4sci.com/orgo-ebook/ Video 2 in the Resonance series show's you which arrow patterns to avoid and key arrow patterns to follow when drawing resonance structures in your organic chemistry course. Resources mentioned in this video: Periodic Table and Trends: http://leah4sci.com/periodic-table-and-atomic-trends-video/ Formal Charge Shortcut: http://leah4sci.com/formal-charge-formula-and-shortcut/ Catch the entire series along with the Resonance Guide and Practice Quiz on my website: http://leah4sci.com/resonance This series requires quick formal charge calculations which you can learn here: leah4sci.com/formal-charge-formula-and-shortcut/ For even more in-depth review including practice problems and explanations, check out my online membership site: http://studyhall.leah4sci.com/join For private online tutoring visit my website: http://leah4sci.com/organic-chemistry-tutor/
Views: 17653 Leah4sci
1 8   sp2 hybrid orbitals and the st
 
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Organic Chemistry
Views: 11 Dongjing Lu
Dithionous acid Meaning
 
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Video shows what dithionous acid means. the unstable acid, H2S2O4, known only as its derivatives, the dithionites. dithionous acid synonyms: hydrosulfurous acid. Dithionous acid Meaning. How to pronounce, definition audio dictionary. How to say dithionous acid. Powered by MaryTTS, Wiktionary
Views: 105 ADictionary