The order of decreasing stability of the carbanions is: 1) (CH3)3C− 2) (CH3)2CH− 3) CH3CH2− 4) C6H5CH2−
A
1>2>3>4
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B
4>3>2>1
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C
4>1>2>3
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D
1>2>4>3
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Solution
The correct option is C4>3>2>1 More the +I effect, lesser is the stability of carbanions. So, stability of carbanion order is: 10>20>30. Benzyl carbanion is most stable because of resonance stablisation.