CaO and NaCl have the same crystal structure and nearly the same ionic radii. If 'u' is the lattice energy of NaCl, the lattice energy of CaO is very nearly

Question

CaO and NaCl have the same crystal structure and nearly the same ionic radii. If 'u' is the lattice energy of NaCl, the lattice energy of CaO is very nearly (A) 4u (B) 2u (C) u (D) u/2

Tardigrade Admin · Accepted Answer

Lattice energy propto ( textProduct of charges on ions/ textInterionic distance) In CaO, the charges on cation and anion are twice the magnitude of charges on the cation and anion of NaCl. The interionic distance is the same.

Q. CaO and NaCl have the same crystal structure and nearly the same ionic radii. If 'u' is the lattice energy of NaCl, the lattice energy of CaO is very nearly

4u

2u

u

u/2

Lattice energy $\propto \frac{Product of charges on ions}{Interionic distance}$

In CaO, the charges on cation and anion are twice the magnitude of charges on the cation and anion of NaCl. The interionic distance is the same.

Q. CaO and NaCl have the same crystal structure and nearly the same ionic radii. If 'u' is the lattice energy of NaCl, the lattice energy of CaO is very nearly

4u

2u

u

u/2

Lattice energy ∝Interionic distanceProduct of charges on ions​ In CaO, the charges on cation and anion are twice the magnitude of charges on the cation and anion of NaCl. The interionic distance is the same.

Lattice energy $\propto \frac{Product of charges on ions}{Interionic distance}$

In CaO, the charges on cation and anion are twice the magnitude of charges on the cation and anion of NaCl. The interionic distance is the same.