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Guanidine (I) and its conjugate acid (II...

Guanidine (I) and its conjugate acid (II) are given below along with urea(III) and its conjugate base (IV)

Basic properties of I & II compounds are mainly influenced by resonance and the acidity of the bases depends upon lone pair of electrons.
Urea is mono basic because

A

It contain only one lone pair which can accept proton

B

It is mainly due to inductive effect of `-NH_(2)` and C = O groups

C

It is mainly due to lone pair and `pi` bond conjugation

D

All of the above

Text Solution

Verified by Experts

The correct Answer is:
C
Mainly due to lone pair and T-bond conjugation
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