Which statement best describes the properties of covalent compounds?

Question

A.
They are always solid at room temperature, are brittle, and have a high melting point.
B.
They may be gases, liquids, or solids at room temperature, and have a low melting and boiling point.
C.
They are always composed of an equal proportion of cations to anions.
D.
They are always liquid at room temperature, and have a high melting and boiling point.
E.
They are good conductors of heat and electricity, and are ductile and malleable.

Answer 1

The statement that best describes the properties of covalent compounds is:

B. They may be gases, liquids, or solids at room temperature, and have a low melting and boiling point.

Covalent compounds can exist in various states at room temperature and typically have lower melting and boiling points compared to ionic compounds.