Assign the position of the element having outer electronic configuration, $\left(\mathrm{n}-1\right){\mathrm{d}}^2{\mathrm{ns}}^2$ for $\mathrm{n}=4$.

Predict the formulae of the stable binary compounds that would be formed by the combination of the following pairs of elements.

$\mathrm{Li}$ and $\mathrm{O}$.

Predict the formulae of the stable binary compounds that would be formed by the combination of the following pair of elements: $\mathrm{Mg}$ and $\mathrm{N}$.

Predict the formulae of the stable binary compounds that would be formed by the combination of the following pair of elements.

$\mathrm{Al}$ and $\mathrm{I}$.

Predict the formulae of the stable binary compound that would be formed by the combination of the following pair of elements: $\mathrm{Si}$ and $\mathrm{O}$.

Predict the formulae of the stable binary compounds that would be formed by the combination of the following pair of elements.

$\mathrm{P}$ and $\mathrm{Cl}$.

Predict the formulae of the stable binary compound that would be formed by the combination of the following pair of elements.

Element with atomic number $30$ and $\mathrm{Cl}$.