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Arrange the following compounds in incre...

Arrange the following compounds in increasing order of `CNH_(2)` bond length: Methanamine, Aniline, p-ethoxy aniline

A

Methanamine `lt` p-ethoxy aniline `lt` aniline

B

Aniline `lt` p-ethoxy aniline `lt` methanamine

C

Aniline `lt` methanamine `lt` p-ethoxy aniline

D

Methanamine `lt` Aniline `lt` p-ethoxy aniline

Text Solution

Verified by Experts

The correct Answer is:
B
`CH_(3)-NH_(2)to` here (C - N) bond is a pure single bond.

`to` in this compound (C - N) bond has a partial double bond character due to resonance.

`to + R` effect of `(-OC_2H_5)`
So, correct order is
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