The lattice energy of mgcl2 is the energy change for which one of the following processes?

The lattice energy of MgCl2 is the energy change for which one of the following processes?

a. Mg(s) + Cl2(g) → MgCl2(s)
b. Mg(g) + 2Cl(g) → MgCl2(s)
c. Mg2+(s) + 2Cl−(g) → MgCl2(g)
d. Mg2+(g) + 2Cl−(g) → MgCl2(s)
e. MgCl2(aq) → MgCl2(s)

Answer

Lattice energy can be defined as energy required to convert one mole of ionic solid into its gaseous ionic constituents. Or in opposite way it can be defined as amount of energy released when an ionic solid is formed from its gaseous ionic constituents.
So lattice energy for MgCl2 is given by

Mg2+(g) + 2Cl-(g) --> MgCl2(s)

So option D is correct

Hope this will help you. We are looking forward for you.
Happy Cheggi

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