Covalent bonds ___ conduct electricity well.

Always

Usually

Rarely

Never

Covalent bonds never conduct electricity well.

Answer: Option D

Explanation:

For a metal or conductor to conduct electricity, there must be free electrons moving freely on the outermost orbit so that when there is a potential difference, the electrons flows and produce electricity by theory motion.

Hence the outermost shell must be unstable for a conductor, else there will be no free electrons. In covalent bonds, electrons are shared which makes them difficult to move and produce electricity.

They rarely conduct electricity well.