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underset((a)) overset(Ө)(CH(3))," ...

`underset((a)) overset(Ө)(CH_(3))," " underset((b))overset(Ө) (CH_(3)CH_(2))`
`a gt b` (stability)

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To determine the stability of the carbanions (A and B) represented as \( \text{(a)} \, \overset{Ө}{\text{CH}}_3^{-} \) and \( \text{(b)} \, \overset{Ө}{\text{CH}}_3\text{CH}_2^{-} \), we need to analyze the effects of the substituents on the carbanion's stability. ### Step-by-step Solution: 1. **Identify the Carbanions**: - Carbanion A: \( \text{(a)} \, \overset{Ө}{\text{CH}}_3^{-} \) (methyl carbanion) - Carbanion B: \( \text{(b)} \, \overset{Ө}{\text{CH}}_3\text{CH}_2^{-} \) (ethyl carbanion) ...
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