Answer:
(a)
Nitrogen atom in has
lone pair of electron which it can donate by means of co-ordinate bond and acts
as a good complexing agent. 1
(b)
molecule
contain two group
which can ionize to form two ions. The
third H-atom is directly attached to p-atom and is not ionisable.
(c)
In solid state exists
as hence it
is ionic in nature. Due to ionic nature it conducts current on
fusion. 1
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