Question:medium
Which one of the carbanions is the least stable?
Which one of the carbanions is the least stable?
Show Hint
Carbanions are stabilised by electron-withdrawing groups (e.g., \( -\text{NO}_2 \), \( -\text{CHO} \)) and destabilised by electron-donating groups (e.g., \( -\text{CH}_3 \)).
Updated On: Mar 28, 2026
Show Solution
The Correct Option is C
Solution and Explanation
Electron-withdrawing and electron-donating groups attached to the carbanion's carbon atom influence its stability. Electron-withdrawing groups like \( -\text{NO}_2 \) and \( -\text{CHO} \) stabilize the negative charge. Conversely, electron-donating groups such as \( -\text{CH}_3 \) destabilize it. Therefore, a carbanion in \( \text{CH}_2-\text{CH}_3 \), lacking electron-withdrawing groups, exhibits the lowest stability. Final Answer:
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