Which of the following alkenes do not show E/Z-isomerism? Select all that apply. Incorrect selections will give point deductions. 2-methyl-2-hexene 2-methyl-3-hexene 3-propyl-2-hexene 1-methylcyclohexene 1-chloro-1-butene O0O0

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### Question:

Which of the following alkenes **do not** show E/Z-isomerism? Select all that apply. Incorrect selections will give point deductions.

- [ ] 2-methyl-2-hexene
- [ ] 2-methyl-3-hexene
- [ ] 3-propyl-2-hexene
- [ ] 1-methylcyclohexene
- [ ] 1-chloro-1-butene

### Explanation:

E/Z isomerism occurs in alkenes due to the restricted rotation about the carbon-carbon double bond and the different groups attached to these carbons. An alkene must have two different groups attached to each of the carbons involved in the double bond to exhibit E/Z isomerism.

**Key to Determining E/Z-isomerism:**
- Check the substituents on the double-bonded carbons.
- If both substituents on any of the double-bonded carbons are the same, E/Z isomerism is not possible.

Use this information to determine which compounds from the list do not exhibit E/Z isomerism and select them accordingly.
Transcribed Image Text:### Question: Which of the following alkenes **do not** show E/Z-isomerism? Select all that apply. Incorrect selections will give point deductions. - [ ] 2-methyl-2-hexene - [ ] 2-methyl-3-hexene - [ ] 3-propyl-2-hexene - [ ] 1-methylcyclohexene - [ ] 1-chloro-1-butene ### Explanation: E/Z isomerism occurs in alkenes due to the restricted rotation about the carbon-carbon double bond and the different groups attached to these carbons. An alkene must have two different groups attached to each of the carbons involved in the double bond to exhibit E/Z isomerism. **Key to Determining E/Z-isomerism:** - Check the substituents on the double-bonded carbons. - If both substituents on any of the double-bonded carbons are the same, E/Z isomerism is not possible. Use this information to determine which compounds from the list do not exhibit E/Z isomerism and select them accordingly.
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