Show how bonding occurs between magnesium and fluorine?

Answer 1

Magnesium has 2 valence electrons which it will gladly give away to become Mg²⁺

Fluorine has 7 valence electrons and wants 1 more to complete the octet and make it stable. It becomes F^-

So, if you have 2 fluorines, each one can take an electron from the Mg and you end up with

Mg²⁺ and 2F^- The bonding might be written or described as follows:

[F-] [Mg²⁺] [F^-] to represent the magnesium fluoride salt, MgF₂