1.

The decreasing nucleophilic order of the followingcompounds is: i. NH_(3), ii. PH_(3), iii. AsH_(3), iv. SbH_(3)

Answer»

`(i) gt (ii) gt (iii) gt (iv)`
`(iv) gt (iii) gt (ii) gt (i)`
`(ii) gt (i) gt (iii) gt (iv)`
`(ii) gt (i) gt (iv) gt (iii)`

Solution :SINCE nucleophilic centre is DIFFERENT ad belongs to the same groupso basic character and nuclophilicity are reversed. `SbH_(3) gt AsH_(3) gt Ph_(3) gt NH_(3)`


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