A. NaCl
B. MgO
C. KBr
D. CsF
Answer: MgO
A. NaCl
B. MgO
C. KBr
D. CsF
Answer: MgO
Additional Information: Magnesium oxide (MgO) has the highest lattice energy because of the high charge and small size of the Mg²⁺ and O²⁻ ions.
Subjects: Chemical Bonding, Chemistry