Although for Mg, Delta_iH(378 kJ mol^(-1)) is greater than Delta_iH_2 (1450 kJ mol^(-1)), Mg prefers to form MgCl_2 rather than MgCl because

Although for Mg, Delta_iH(378 kJ mol^(-1)) is greater than Delta_iH_2

1.	Although for Mg, Delta_iH(378 kJ mol^(-1)) is greater than Delta_iH_2 (1450 kJ mol^(-1)), Mg prefers to form MgCl_2 rather than MgCl because
Answer» `MG^(2+)` ion has the noble gas configuration `Mg^(2+)` ion is smaller than `Mg^(+)` `Mg^(2+)` ion has HIGHER CHARGE than `Mg^(+)` ion the lattice enthalpy of `MgCl_2` is very high Solution :Lattice enthalpy of `MgCl_2(2527 kJ mol^(-1))` is more than ENOUGH to COMPENSATE for the energy needed to remove the first two electrons from an `Mg` atom (`738 kJ mol^(-1)+1450 kJ mol^(-1)=2188 kJ mol^(-1)`).