Geometric isomerism in alkenes is due to:
Correct answer: D. Restricted rotation about C=C bond
- A. Oscillation of H atoms between two polyvalent carbon atoms
- B. Optical rotation due to multiple bonds
- C. Free rotation about C=C bond
- D. Restricted rotation about C=C bond
Explanation
Geometric isomerism in alkenes arises due to the restricted rotation around the carbon-carbon double bond. The presence of this double bond locks the molecule into a specific orientation, leading to different spatial arrangements of substituent groups on each side of the double bond, resulting in geometric isomers.
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About Fundamental Principles of Organic Chemistry
Organic chemistry begins with carbon compounds classified by carbon skeleton, saturation and functional group. Work includes identifying groups such as hydroxyl, carbonyl, carboxyl and amino, applying basic nomenclature, and distinguishing structural, geometric and optical isomers, where the same molecular formula does not necessarily mean the same structure or properties.
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