CaO and NaCl have the same crystal structure and approximately the same radii. It U is the lattice energy of NaCl, the approximate lattice energy of CaO is

CaO and NaCl have the same crystal structure and approximately the sam

1.	CaO and NaCl have the same crystal structure and approximately the same radii. It U is the lattice energy of NaCl, the approximate lattice energy of CaO is
Answer» U 2U `U//2` `4U` ANSWER :d