Final answer:
SrO would have the largest lattice energy because it has higher ionic charges of Sr2+ and O2- and relatively smaller ionic radii compared to the other options. The correct option is A
Step-by-step explanation:
The question pertains to which ionic solid would have the largest lattice energy among SrO, NaF, CaBr2, CsI, and BaSO4. Lattice energy is directly proportional.
To the product of the ionic charges and inversely proportional to the internuclear distance between ions. Therefore, compounds with higher ionic charges and smaller ionic radii will generally have larger lattice energies.
SrO, among the options provided, has Sr2+ and O2- ions, which means it has a product of ionic charges of (+2)(-2) = -4. Compounds such as NaF, CaBr2, CsI, and BaSO4 have either lower charges or larger ionic sizes, leading to lower lattice energies.
Thus, based on the information regarding ionic charges and sizes, SrO is expected to have the highest lattice energy.The correct option is A.