Place the following in order of decreasing magnitude of lattice energy.
KF MgS RbI
A)RbI KF MgS
B)RbI MgS KF
C)MgS RbI KF
D)KF RbI MgS
E)MgS KF RbI

Question

Place the following in order of decreasing magnitude of lattice energy.
KF MgS RbI
A)RbI > KF > MgS
B)RbI > MgS > KF
C)MgS > RbI > KF
D)KF > RbI > MgS
E)MgS > KF > RbI

Quizplus · Accepted Answer

Lattice energy is higher for compounds with higher charges and smaller ionic radii. MgS has the highest lattice energy due to the +2 and -2 charges. KF has a higher lattice energy than RbI due to smaller ionic radii and higher charge density.

Place the Following in Order of Decreasing Magnitude of Lattice