Place the following in order of increasing magnitude of lattice energy.
MgO LiI CaS
A)CaS

Name: Place the following in order of increasing magnitude of lattice energy. MgO LiI CaS A)CaS < MgO < LiI B)LiI < CaS < MgO C)MgO < CaS < LiI D)LiI < MgO < CaS E)MgO < LiI < CaS
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Question

Place the following in order of increasing magnitude of lattice energy.
MgO LiI CaS
A)CaS < MgO < LiI
B)LiI < CaS < MgO
C)MgO < CaS < LiI
D)LiI < MgO < CaS
E)MgO < LiI < CaS

Quizplus · Accepted Answer

Lattice energy increases with the charge of the ions and decreases with the size of the ions. MgO and CaS have higher charges than LiI, and MgO has smaller ions than CaS, leading to the order LiI < CaS < MgO.

Place the Following in Order of Increasing Magnitude of Lattice