Match the following species with the correct number of electrons present in them:

Species	Number of Electrons
$(\mathrm{i}) {\mathrm{Be}}^{2+}$	$\left(a\right) 0$
$(\mathrm{ii}) {\mathrm{H}}^{+}$	$\left(b\right) 10$
$(\mathrm{iii}) {\mathrm{Na}}^{+}$	$\left(c\right) 2$
$(\mathrm{iv}) {\mathrm{Mg}}^{+}$	$\left(d\right) 11$
	$\left(e\right) 4$