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.