1.

The order of decreasing stability of the carbanions (1) (CH_(3))_(3)bar(overset(..)(C))(2) (CH_(3))_(2)bar(overset(..)(C))H (3) CH_(3)bar(overset(..)(C))H_(2)(4) C_(6)H_(5)bar(overset(..)(C))H_(2) is

Answer»

`1 gt 2 gt 3 gt 4`
`4 gt 3 gt 2 gt 1`
`4 gt 1 gt 2 GT3`
`1 gt 2 gt 4 gt 3`

Solution :`UNDERSET("Benzyl carbanion")(C_(6)H_(5)-CH_(2)) gt underset("Ethyl carbanion")(CH_(3)CH_(2))gt`
`underset("Isoproyl carbanion")((CH_(3))_(2)overset(-)overset(..)(C)H) gt underset(underset("Cabanion")("Tert-butyl"))((CH_(3))_(3)overset(-)overset(..)(C))`


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