Question

fromation of a magnesium chloride​

Answer 1

I am not understand the question.

Answer 2

Here is your answer ;

A magnesium atom will lose 2 electrons to form a stable 2+ ion. Chlorine is in group 7 of the periodic table. A chlorine atom will gain 1 electron to form a stable 1- ion,forms the ionic bond between magnesium and chlorine.

Mg+2Cl→MgCl 2

I hope it helps you mate !