An ionizing solvent has

In the crystals of which of the following ionic compounds would you expect maximum distance between the centres of cations and anions?

Which of the following is generally true about ionic compounds?

Write Lewis symbols for the following atoms and ions:
$S$ and $S^{2-}$; $Al$ and $Al^{3+}$; $H$ and $H^{-}$

The lattice energy of an ionic compound depends on which of the following?

Elements $X$ and $Y$ have $2$ and $6$ electrons in their valence shells,respectively. If they combine,what will be the possible formula of the compound formed?