the second ionization enthalpy of calcium is higher than the first ionization enthalpy and yet calcium forms cacl2, why?

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Solution

1. This is because,when Ca²⁺ combines with 2 Cl^- ions,the lattice energy released is large enough to compensate the second and first ionisation energy of Ca.
2. Moreover Ca²⁺ is having noble gas configuration,so it is much stable and stabilization energy also takes part.

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the second ionization enthalpy of calcium is higher than the first ionization enthalpy and yet calcium forms cacl2, why?

1. This is because,when Ca2+ combines with 2 Cl​- ions,the lattice energy released is large enough to compensate the second and first ionisation energy of Ca. 2. Moreover Ca2+ is having noble gas configuration,so it is much stable and stabilization energy also takes part.

1. This is because,when Ca²⁺ combines with 2 Cl^- ions,the lattice energy released is large enough to compensate the second and first ionisation energy of Ca.
2. Moreover Ca²⁺ is having noble gas configuration,so it is much stable and stabilization energy also takes part.