Match the following columns :

	Column-I  (Molecules/species)		Column-II {Correct characteristics)
a)	${\mathrm{SO}}_4^{2-}$	p)	All the bond lengths are equal
b)	${\mathrm{NH}}_3$	q)	Perfect tetrahedral shape of the molecule/ion
c)	${\mathrm{NO}}_3^{-}$	r)	Both $\sigma$ and $\mathrm{\pi }$ bond are present
d)	${\mathrm{CHF}}_3$	s)	Non planar
		t)	Polar

 

(a) The structure of ${\mathrm{SO}}_4^{2-}$,

(P) Due to resonance (Q) Perfect tetrahedral shape (R) $4\sigma$and $2\pi$ bond are present (S) Non-planar

(b)

(P) B.L. are same (S) Pyramidal non-planar (T) Lone pair moment and bond pair moment is not equal.

(c)

(P) Due to resonance. (R) $\mathit{3}\sigma$ and $\mathit{1}\pi$ bond are present.

(d)

(S) Non-planar (T) B.A. are different.