Match of the following column:

	Column-I		Column-II
(a)	${\mathrm{NO}}_3^{-},{\mathrm{CO}}_3^{2-}$	(p)	Semi-metals
(b)	$\mathrm{Si},\mathrm{Ge},\mathrm{As},\mathrm{Sb}$	(q)	Isoelectronic species
(c)	$\text{ He, Ne, Ar, Kr, Xe }$	(r)	van der Waals' radii
(d)	$\mathrm{Na},\mathrm{Mg},\mathrm{Al},\mathrm{Si},\mathrm{P},\mathrm{S}$	(s)	Typical elements

Because they both have the same amount of electrons, ${\mathrm{NO}}_3^{-}$and ${\mathrm{CO}}_3^{2-}$ are isoelectronic. 

Boron, silicon, germanium, arsenic, antimony, tellurium, and polonium are categorized as semimetals or metalloids.

In the periodic table, the elements Na, Mg, Al, Si, P, S, Cl, and Ar are grouped in ascending order of their atomic numbers.