(a). Write the electron arrangement in (i) a magnesium atom, and (ii) an oxygen atom.
(b). How many electrons are there in the valence shell of (i) a magnesium atom, and (ii) an oxygen atom ?
(c) Show on a diagram the transfer of electrons between the atoms in the formation of `MgO`.
(d) Name the solvent in which ionic compounds are generally soluble.
(e). Why are aqueous solutions of ionic compounds able to conduct electricity ?

Explanation

(d) Water