Question

Diamond is not a good conductor of electricity because :

• A. it is very hard
• B. it's structure is very compact
• C. it is not water soluble
• D. it has no free electrons to conduct electric current

Answer 1

The correct option is D it has no free electrons to conduct electric current

Diamond is made up of carbon atoms bind together by the strong covalent bond in a tetrahedral arrangement. Due to this strong covalent bond, electrons are localised (free electrons are not there), and thus, diamond is a bad conductor of electricity.

Hence, option D is correct.