AP Chemistry
2.3 Structure of Ionic Solids
A student investigates the factors that influence the lattice energy of ionic solids and collects the ionic radius data shown in the table below.
Based on Coulomb's law and the data in the table, which of the following correctly ranks \(\text{CaO}\), \(\text{LiF}\), \(\text{MgO}\), and \(\text{NaCl}\) in order of decreasing lattice energy magnitude (from greatest to least)?
| Ion | Ionic radius (pm) |
|---|---|
| \(\text{Mg}^{2+}\) | \(72\) |
| \(\text{Ca}^{2+}\) | \(100\) |
| \(\text{Li}^+\) | \(76\) |
| \(\text{Na}^+\) | \(102\) |
| \(\text{O}^{2-}\) | \(140\) |
| \(\text{F}^-\) | \(133\) |
| \(\text{Cl}^-\) | \(181\) |
Based on Coulomb's law and the data in the table, which of the following correctly ranks \(\text{CaO}\), \(\text{LiF}\), \(\text{MgO}\), and \(\text{NaCl}\) in order of decreasing lattice energy magnitude (from greatest to least)?
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