Hybridisation state of $C$ in diamond is

Which among the following molecules is $(a)$ involved in $sp^3d$ hybridization,$(b)$ has different bond lengths and $(c)$ has a lone pair of electrons on the central atom?

$sp^3d^2$ hybridization is not displayed by

The hybridisation of the central atom in $NF_3$ is:

Identify the correct match:

Column $I$ (Molecule/ion)	Column $II$ (Hybridisation)
$A$. $H_3O^{+}$	$P$. $sp$
$B$. $NH_2^{-}$	$Q$. $sp^2$
$C$. $NO_3^{-}$	$R$. $sp^3$
$D$. $ClF_3$	$S$. $sp^3d$

The hybridisation state of chlorine in $ClF_3$ is