Question

Compared with ionic compounds, molecular compounds


have higher boiling points


are brittle


have lower melting points


are harder

Answer 1

have lower melting points

Explanation: Ionic compounds form strong electrostatic lattices, so they generally have high melting/boiling points and are hard and brittle. Molecular compounds are held together by much weaker intermolecular forces, so they melt and boil at lower temperatures and are usually softer (not harder).