Question 2 (0.04 points) Which description about covalent compounds is correct?
A) Covalent (or molecular) compounds generally have higher melting points.
B) Covalent (or molecular) compounds conduct electricity in their molten state.
C) Basic structure unit of covalent (or molecular) compounds is NOT molecules.
D) Covalent (or molecular) compounds generally have lower melting points and
tend to be gases, liquids, or low-melting solids.