When electrons are shared unequally a/an
bond is formed

Covalent bonds form when electrons are shared between atoms and are attracted by the nuclei of both atoms. In pure covalent bonds, the electrons are shared equally. In polar covalent bonds, the electrons are shared unequally, as one atom exerts a stronger force of attraction on the electrons than the other.

The answer is b.the gaseous state is electrically positive, while the plasma state is electrically negative.