1.

The migratory capacity is

Answer»

`H^(-) gt CH_(3)^(-) gt Ph^(-)`
`Ph^(-) gt CH_(3)^(-) gt H^(-)`
`H^(-) gt Ph^(-) gt CH_(3)^(-)`
`CH_(3)^(-) gt Ph^(-) gt H^(-)`

Solution :The migratory capacity is maximum if the negative charge is on a more electronegative atom.
In `Ph^(-)`, the -ve charge is on a `sp^(2)` carbon.
In `OVERSET(-)(C)H(3)`, the -ve charge is on a `sp^(3)` carbon atom.
Out of carbon and hydrogen, carbon is more electronegative. Further an `sp^(2)C` atom is more electronegative than `sp^(3)C` atom.
HENCE migratory capacity of `Ph^(-) gt overset(-)(C)H_(3) gt H^(-)`.
So answer (B) is CORRECT whereas (a), (c) and (d) are incorrect.


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