Among the following compounds the least basic compound is: C3H7NH2,NH3,CH3NH2 and C6H5NH2
A
C3H7NH2
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B
NH3
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C
CH3NH2
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D
C6H5NH2
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Solution
The correct option is DC6H5NH2 C6H5NH2 is least basic compound due to resonance by which the lone pair of nitrogen takes part in resonance. Due to unavailability of lone pair on N, aniline become less basic. The lone pair of N is delocalized into benzene ring through resonance.