It is given that compound ‘X’ conducts electricity and is soluble in water. These are the properties of an ionic compound. Hence, the given compound ‘X’ is an ionic compound.

The other two properties of ionic compounds are:

i. Physical nature: Ionic compounds are solid and hard because of the strong force of attraction between the positive and negative ions. These are brittle and can break into pieces if pressure is applied.

ii. Melting and boiling point: Ionic compounds have high melting and melting point.