Solve the question.

Dear student,

Mg^{​​​​​2+} is formed by loosing 2 electrons.
There are 2 electrons in the valence shell.
The Mg atom donates its 2 valence electrons and forms a stable Mg²⁺ ion.
Mg can give up these 2 electrons to become stabel.
So, during bond formation Mg uses these 2 electrons in the bond formation.

Mg ------> Mg^{​​​​​2+} + 2e^- 

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