Question

Out of the given compounds $A$ and $B$, the number of $N$ atoms in the compound which is more basic are:

Answer 1

Compound B, i.e., guanidine is the strongest base amongst all nitrogenous compounds.

The increased basicity can be explained by drawing the resonance structures of the protonated guanidine.

It has 3 equivalent resonating structures and so is very stable.