Geometric isomers occur in some alkenes. These isomers are called cis-trans isomers because of the spatial orientation of the atoms or groups of atoms attached to the two carbons that form the double bond. CH₂-CH₂ CH₂ H₂C-CH₂-CH₂ H₂C-CH₂ CH₂-CH₂ D H₂C H₂C-CH₂ B Select the pairs that are cis-trans isomers. CH₂-CH₂ CH₂ H₂C-CH₂ H H₂C-CH₂ H H₂C H₂C CH₂

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Q: which is the e-isomer?

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Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.