Covalent compounds-

Correct option is B

The correct answer is (b) All of the options.
Covalent compounds exhibit the following properties:
1. Have low melting and boiling point: Covalent compounds generally have lower melting and boiling points compared to ionic compounds because the intermolecular forces between molecules are weaker.
2. Are poor conductors of electricity: Covalent compounds do not conduct electricity in solid or liquid state as they do not have free ions or electrons.
3. Are formed by the sharing of electrons in the bonding atoms: Covalent bonds are formed when atoms share pairs of electrons to achieve stability.
Therefore, all the given options are correct descriptions of covalent compounds.