The shape of $CH_3^+$ species is

The percentage of $s$-character in the hybrid orbitals of nitrogen in $NO_{2}^{+}$ and $NO_{3}^{-}$ respectively are:

Consider $PF_{5}$,$BrF_{5}$,$PCl_{3}$,$SF_{6}$,$[ICl_{4}]^{-}$,$ClF_{3}$ and $IF_{5}$.
Amongst the above molecule$(s)$/ion$(s)$,the number of molecule$(s)$/ion$(s)$ having $sp^{3}d^{2}$ hybridisation is $........$

Identify the correct match:

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

Which one of the following is a correct set with respect to molecule,hybridisation,and shape?

Which bonds are formed by a carbon atom with $sp^{2}$-hybridisation?