Show the electronic transfer in the formation of MgCl2 form its elements.

Mg >> Electronic configuration= 2,8,2 Stable form>> 2,8 hence valency= +2

Cl>> Electronic configuration= 2,8,7 Stable form>> 2,8,8 hence valency= -1


Formation of MgCl2


Formation of magnesium ion by donating an electron


Mg(2,8) Mg+2 + 2e-


Formation of chlorine ion by accepting an electron


Cl(2,8,7) + e- Cl-


When 2 free chlorine atoms accept the electrons given by single magnesium ion the compound MgCl2


is formed.



2