larger lattice energy Cabr2 or mgs

Question

Question

Answer 1

Answer #1

Lattice energy is proportional to the charge (Ze) of the ionic compound.
Here,CaBr₂ Ca = +2 and Br = -1
In case of Mg, Mg = +2 and S = -2

so, total charge in MgS is (+2)*(-2)= -4 and that is in CaBr₂ is (+2)*(-1)=-2

Thus MgS has highest lattice energy than that of CaBr₂

Answer 2

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