Which one of the following is a correct set?

Identify the pair of molecules which have same hybridisation as the hybridisation in $Xenon$ $(II)$ fluoride.

Which is the correct statement?
As the $s$-character of a hybrid orbital decreases:
$(I)$ The bond angle decreases
$(II)$ The bond strength increases
$(III)$ The bond length increases
$(IV)$ Size of orbitals increases

$s-$character in $sp$ hybridised orbitals is

Hybridisation state of $C$ in diamond is

Among the following compounds,which one is planar in shape?