Ionic bond, metals atom and non-metal atom usually form an ionic bond. read more
1) When a metal and a nonmetal bond, the metal ion "gives" its valence electrons to the anion to form an ionic bond. Magnesium is a metal (group 2/alkaline earth metals), while chlorine is a nonmetal (group 7/halogen). Therefore, because magnesium and chlorine do not share electrons, they do not form a covalent bond. read more