Three ionic compounds are listed below

CHEMISTRY · Single correct · ISC · Chemistry · Chemical Bonding and Molecular Structure · Chemical Bonding and Molecular Structure

Problem

Three ionic compounds are listed below. • NaCl  (+1/−1 ions, smaller anion) • KBr  (+1/−1 ions, larger cation and anion) • MgO  (+2/−2 ions, similar ionic radii to NaCl) Which ranking of lattice energy (magnitude) from greatest to least is most consistent with periodic trends? (a) MgO>KBr>NaCl\text{MgO} > \text{KBr} > \text{NaCl} (b) KBr>NaCl>MgO\text{KBr} > \text{NaCl} > \text{MgO} (c) MgO>NaCl>KBr\text{MgO} > \text{NaCl} > \text{KBr} (d) NaCl>MgO>KBr\text{NaCl} > \text{MgO} > \text{KBr}

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