Which of the following is NOT a property of a molecular compounds?

C would be the correct answer, because compared to ionic lattice crystals, covalent molecules have lower boiling points. This is because the crystal structure of ionic molecules have more energy in their bonds than the covalent bond does, and therefore it is harder to break them apart. More energy (correlated with higher temperature) must be applied to break an ionic bond as opposed to a covalent bond.