https://www.khanacademy.org/science/telangana-class-10-physical-sciencein/x1ac9c643dc8dffee:carbon-and-its-compounds/x1ac9c643dc8dffee:isomerism/v/isomers 2021-03-18T10:33:23Z Isomers Structural isomers, stereoisomers, geometric isomers, cis-trans isomers, and enantiomers. video https://cdn.kastatic.org/googleusercontent/MFauZmYcTCBcyQK-gJkdVqrMqwXbCLx4TlQ6T8kBRHfS9DkNE0rvzDRf3ulaLpcRL5womxE4Ee4BVktGNYp7g_Rzig Isomers Structural isomers, stereoisomers, geometric isomers, cis-trans isomers, and enantiomers. https://cdn.kastatic.org/ka-youtube-converted/z8M4EciPpYI.mp4/z8M4EciPpYI.mp4 409 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/organic-chemistry/alkenes-alkynes/naming-alkenes-jay/v/cis-trans-isomerism 2023-01-06T23:52:36.372189521Z Cis–trans isomerism Cis–trans notation can be used to describe the configuration of a double bond with exactly two substituents and two hydrogens. If the two substituents are on the same side of the double bond, the configuration of the bond is cis. If the two substituents are on opposite sides of the double bond, the configuration of the bond is trans. Jay video https://cdn.kastatic.org/googleusercontent/8DKaBrKrzfrxqjVWif_rF2gT2IzbOQ736qDgSFeIkFNEdeRjoCCJqbuLd_9419TylUQH9cwdF1cW8MmwSDCrAa26 Cis–trans isomerism Cis–trans notation can be used to describe the configuration of a double bond with exactly two substituents and two hydrogens. If the two substituents are on the same side of the double bond, the configuration of the bond is cis. If the two substituents are on opposite sides of the double bond, the configuration of the bond is trans. https://cdn.kastatic.org/ka-youtube-converted/JjtzMQDdyuM.mp4/JjtzMQDdyuM.mp4 324 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/organic-chemistry/alkenes-alkynes/naming-alkenes/v/cis-trans-and-e-z-naming-scheme-for-alkenes 2021-03-22T03:07:32Z cis-trans and E-Z naming scheme for alkenes Cis-Trans and E-Z Naming Scheme for Alkenes Sal Khan video https://cdn.kastatic.org/googleusercontent/TvROlapGALQ3h52Cqf47btlAfVmDpXtr2337ZFZSrJ2SgJrsJx0JVSr70LK3mSsda9VnZFNIWMty6td2km2ssdo4 cis-trans and E-Z naming scheme for alkenes Cis-Trans and E-Z Naming Scheme for Alkenes https://cdn.kastatic.org/ka-youtube-converted/oYoQpDtBLac.mp4/oYoQpDtBLac.mp4 296 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:molecular-and-ionic-compound-structure-and-properties/x2eef969c74e0d802:bond-hybridization/v/sp2-hybridization-jay-final 2021-01-04T18:35:18Z sp² hybridization In sp² hybridization, one s orbital and two p orbitals hybridize to form three sp² orbitals, each consisting of 33% s character and 67% p character. This type of hybridization is required whenever an atom is surrounded by three groups of electrons. Jay video https://cdn.kastatic.org/googleusercontent/ym9OepRDLCU2IDXc7EVLF6_MUPyf1-5bOmAr0xU3ZXwKgZHHA4oTooYioT9NoP9YYZTSIj-HgKX1Fj3xrb7MGao sp² hybridization In sp² hybridization, one s orbital and two p orbitals hybridize to form three sp² orbitals, each consisting of 33% s character and 67% p character. This type of hybridization is required whenever an atom is surrounded by three groups of electrons. https://cdn.kastatic.org/ka-youtube-converted/ROzkyTgscGg.mp4/ROzkyTgscGg.mp4 762 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/organic-chemistry/stereochemistry-topic/chirality-r-s-system/v/stereoisomer-enantiomer-jay 2021-03-22T03:07:32Z Stereoisomers, enantiomers, and chirality centers The definition of stereoisomers, enantiomers, and chirality centers. How to calculate the number of possible stereoisomers for a structure based on the number of chiral centers.  Jay video https://cdn.kastatic.org/googleusercontent/vr_gfuBFX4Ch3Zn_ckCJcYHjgazdLOFPYQRCqjbcGk8wNDTlVwpDAriAKl_cya_c-Qii5sIug-8SGZVa_ahuLGTKPQ Stereoisomers, enantiomers, and chirality centers The definition of stereoisomers, enantiomers, and chirality centers. How to calculate the number of possible stereoisomers for a structure based on the number of chiral centers.  https://cdn.kastatic.org/ka-youtube-converted/3Ya7I-oDGU0.mp4/3Ya7I-oDGU0.mp4 328 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/grade-12-chemistry-snc-aligned/x7a43e770fc9e15cf:basics-of-organic-chemistry/x7a43e770fc9e15cf:structural-basis-of-stereoisomerism-in-organic-molecules/v/aromatic-stability-of-benzene 2021-05-25T21:59:58Z Aromatic stability of benzene Jay video https://cdn.kastatic.org/googleusercontent/mNEf07TjL9mtTIk5vjmC4qWUe-zKU4gP6gmls22n2tOp5s50gnWjEgcJGPSt2Ytt6x-nfsoGNdf4ly-QsXFrXrfM Aromatic stability of benzene https://cdn.kastatic.org/ka-youtube-converted/4eZpJo_60QQ.mp4/4eZpJo_60QQ.mp4 360 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/grade-12-chemistry-snc-aligned/x7a43e770fc9e15cf:basics-of-organic-chemistry/x7a43e770fc9e15cf:structural-basis-of-stereoisomerism-in-organic-molecules/v/aromatic-heterocycles 2021-05-25T21:59:59Z Aromatic heterocycles Jay video https://cdn.kastatic.org/googleusercontent/KJk-089_7HPjiBAyeVNdP3LlqAVSB9wSN8AWWeeXmP5D8oLGTJKIeRAbAdxkx3pSEh7kP8NvFLzx77qXI3T18kVPMQ Aromatic heterocycles https://cdn.kastatic.org/ka-youtube-converted/IaE632EzCxM.mp4/IaE632EzCxM.mp4 709 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/organic-chemistry/stereochemistry-topic/chirality-r-s-system/v/chirality-center-jay 2021-03-22T03:07:31Z Identifying chirality centers How to determine which atoms in a molecule are chirality centers. Jay video https://cdn.kastatic.org/googleusercontent/DLYDbCjyGaYWnd_vQlVBGJEy1vYI4z_X0J_cR-Q_nGGP2wH-HiQ_ZnrkIODq4egTNfPDO4kZxV7NnhzWbtALoZ6A Identifying chirality centers How to determine which atoms in a molecule are chirality centers. https://cdn.kastatic.org/ka-youtube-converted/ij1TfRMODhA.mp4/ij1TfRMODhA.mp4 488 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/organic-chemistry/stereochemistry-topic/chirality-r-s-system/v/chiral-examples-1 2021-03-22T03:07:31Z Chiral examples 1 Chiral examples 1 Sal Khan video https://cdn.kastatic.org/googleusercontent/MU8NVIQ2NQN_MwdPiSyBbXzApMSUaQ3doBVTeZDlOUMT-jHmZMPGNHE4NeFOiyPjpXPK8mzmOIHbDIPyWI4S7LCF Chiral examples 1 Chiral examples 1 https://cdn.kastatic.org/ka-youtube-converted/0XSSPow5oAc.mp4/0XSSPow5oAc.mp4 662 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/organic-chemistry/stereochemistry-topic/optical-activity/v/drawing-enantiomers 2021-03-22T03:07:32Z Drawing enantiomers Enantiomers are stereoisomers that are non-superimposable mirror images, meaning that one enantiomer will be the mirror image of the other enantiomer. In order to draw an enantiomer, you can determine the stereocenter, then swap the two groups attached to the stereocenter. video https://cdn.kastatic.org/googleusercontent/hsangnpe0V9bO8Ts35YnYY2uG-7jn7ddPMfSutZhQFLGp1sSBEmSKTDUtTEhppIdxI_spiGKnO67o9EynXyaRSY Drawing enantiomers Enantiomers are stereoisomers that are non-superimposable mirror images, meaning that one enantiomer will be the mirror image of the other enantiomer. In order to draw an enantiomer, you can determine the stereocenter, then swap the two groups attached to the stereocenter. https://cdn.kastatic.org/ka-youtube-converted/HOMn523JBok.mp4/HOMn523JBok.mp4 570 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/organic-chemistry/stereochemistry-topic/optical-activity/v/rs-system-new 2021-03-22T03:07:31Z R,S system How to assign the configuration of a chirality center using the R,S system video https://cdn.kastatic.org/googleusercontent/IZ5_qPJg3ykH25T8MtIZTo5Q1wbPpNKInm-uNUcuOr7eC36LKfcnaZuWOJSJ1edI2dZnO4tAnoCyV4BGoZofVWgV R,S system How to assign the configuration of a chirality center using the R,S system https://cdn.kastatic.org/ka-youtube-converted/kFD6hzLseVs.mp4/kFD6hzLseVs.mp4 587 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/organic-chemistry/stereochemistry-topic/optical-activity/v/rs-system-practice-new 2021-03-22T03:07:32Z R,S system practice How to assign a configuration to a chirality center using the R,S system video https://cdn.kastatic.org/googleusercontent/FNJ9WKxRrJMYMlqb3ZxIJI0j0Z0VlhjPMn35fauRlaX23rOaie-xmkiDN71SqkojEKGNPs_WmWodULc0-LvaCCfm R,S system practice How to assign a configuration to a chirality center using the R,S system https://cdn.kastatic.org/ka-youtube-converted/rzXRZFMcZyU.mp4/rzXRZFMcZyU.mp4 524 Structural basis of stereoisomerism in organic molecules https://www.khanacademy.org/science/grade-12-chemistry-snc-aligned/x7a43e770fc9e15cf:basics-of-organic-chemistry/x7a43e770fc9e15cf:structural-basis-of-stereoisomerism-in-organic-molecules/e/stereochemistry-questions 2026-04-08T00:54:09.631945657Z Stereochemistry questions Questions pertaining to stereochemistry Sze Yan exercise https://www.khanacademy.org/science/grade-12-chemistry-snc-aligned/x7a43e770fc9e15cf:basics-of-organic-chemistry/x7a43e770fc9e15cf:structural-basis-of-stereoisomerism-in-organic-molecules/e/geometrical-isomerism-in-alkenes 2025-09-24T11:00:39.072753197Z Geometrical isomerism in alkenes We will learn about cis-trans isomerism in alkenes Nidhi Narwal exercise https://www.khanacademy.org/science/grade-12-chemistry-snc-aligned/x7a43e770fc9e15cf:basics-of-organic-chemistry/x7a43e770fc9e15cf:structural-basis-of-stereoisomerism-in-organic-molecules/e/types-of-isomerism 2026-04-08T00:16:02.937952483Z Types of isomerism We have talked about the different types of isomerism. So, let's solve a couple of questions to test our understanding on isomerism. Revathi exercise