Question: Ionic compounds typically have higher boiling points and lower vapor pressures than covalent compounds. Predict which compound in the following pairs has the lower vapor

Ionic compounds typically have higher boiling points and lower vapor pressures than covalent compounds. Predict which compound in the following pairs has the lower vapor pressure at room temperature:

(a) Cl₂ O or Na₂O;

(b) InCl₃ or SbCl₃;

(c) LiH or HCl;

(d) MgCl₂ or PCl₃.

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