State four differences between electrovalent and covalent compounds.

Electrovalent Compounds	Covalent Compounds
They are formed from the transfer of electrons from one atom to the other. Ex: NaCl	They are formed from the sharing of electrons between constituent atoms. Ex: CCl4
In their molten state, they are good conductors of electricity.	They are generally bad conductors of electricity.
They have high melting and boiling point due to the strong electrostatic force of attraction.	They have low melting and boiling points.
They are generally soluble in water and insoluble in organic solvents.	They are generally soluble in organic solvents and insoluble in water.