1.

The migratory capacity isA. `H^(-) gt CH_(3)^(-) gt Ph^(-)`B. `Ph^(-) gt CH_(3)^(-) gt H^(-)`C. `H^(-) gt Ph^(-) gt CH_(3)^(-)`D. `CH_(3)^(-) gt Ph^(-) gt H^(-)`

Answer» Correct Answer - B
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.


Discussion

No Comment Found

Related InterviewSolutions