(a) in the formation of compound between two atoms A and B, loses two electrons and B gains one electron.
(i) What is the nature of bond between A and B ?
(ii) Suggest the formula of the compound formed between A and B.
(b) On similar lines explain the formation of `MgCl_(2)` molecule.
(c ) Common salt conducts electricity only in the molten state. Why ?

Explanation

(a) (i) The bond formed is of ionic nature.
(ii) The formula of compound is `AB_(2)`.
(b)
(c ) Common salt (NaCl) is an ionic compound. Since ionic compounds are conducting due to the mobility of ions, common salt (NaCl) therefore, conducts electricity either in molten state or in aqueous solution.