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Among the following compounds C(3)H(7)NH...

Among the following compounds `C_(3)H_(7)NH_(2)NH_(3)CH_(3)NH_(2)C_(2)H_(5)NH_(2)` and `C_(6)H_(5)NH_(2)` the least basic compounds is .

A

`C_(3)H_(7)NH_(2)`

B

`NH_(3)`

C

`CH_(3)NH_(2)`

D

`C_(6)H_(2)NH_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Aniline `(C_(6)H_(5)NH_(2))` is the weakest base because the lone pair of electrons on the `N` atom is delocalized throught resonance with the benzene ring

The correct order of basic strength is `C_(6)H_(5)NH_(2) lt NH_(3) lt CH_(3)NH_(2) lt C_(2)H_(5)NH_(2) lt C_(3)H_(7)NH_(2)` .
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