Question

The decreasing nucelophilic order of the following compounds is:
i. `NH_(3)`, ii. `PH_(3)`, iii. `AsH_(3)`, iv. `SbH_(3)`
A. `(i) gt (ii) gt (iii) gt (iv)`
B. `(iv) gt (iii) gt (ii) gt (i)`
C. `(ii) gt (i) gt (iii) gt (iv)`
D. `(ii) gt (i) gt (iv) gt (iii)`

Answer 1

Correct Answer - `b`
Weaker the base or stornger the acid, stonger is the leaving group.
`SbH_(3) gt AsH_(3) gt PH_(3) gt NH_(3)`