Which of the following organic compounds does not show geometric isomerism?
Correct answer: D. 1-Butene
- A. 2-Butene
- B. 3-Hexene
- C. 2-Pentene
- D. 1-Butene
Explanation
For geometric (cis-trans) isomerism to exist, each carbon atom of the double bond must be attached to two different groups. In 1-butene, the first carbon of the double bond is attached to two identical hydrogen atoms, making geometric isomerism impossible.
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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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