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The stability of carbanions in the order...

The stability of carbanions in the order:
I. `RC-=C` II. III. `R_(2)C=CH` IV. `R_(3)C-CH_(2)`

A

I `gt` II `gt` III `gt` IV

B

II `gt` III `gt` IV `gt` I

C

IV `gt` II `gt` III `gt` I

D

I `gt` III `gt` II `gt` IV

Text Solution

Verified by Experts

The correct Answer is:
A
When s-character increases, then electron becomes more closer to the nucleus and structures is of lower energy and is more stable. The stability ordr of carbanions is as:
`RC-=barCgt-barC_(6)H_(5)gtR_(2)C=barCHgtR_(3)C-barCH_(2)`
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