Ionic substances and exothermic lattice
State which compound in each of the following pairs of ionic substances has the most exothermic lattice and why:
NaCl, CaS
Li2O, Na2O
LiF, NaCl
MgO, CaS
Plus two requirements that should be satisfied for a molecule to be polar
Solution Preview
NaCl, CaS
NaCl has a more exothermic lattice because Na+ and Cl- ions are very strongly ionic and therefore, the lattice energy of NaCl is more than that of CaS
Li2O, Na2O
Li2O has a more exothermic lattice because Li+ ion has a smaller ionic radius when compared to Na+ ion, and therefore, the lattice energy of Li2O is more than that of Na2O.
LiF, NaCl ...
Solution Summary
Solution explains which compound, in a multitude of pairs of ionic substances, has the most exothermic lattice.
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