Question

A covalent compound, X exists as (i)__. The compound X has (ii)__ boiling point
and ____(iii)__ melting point. In liquid state, the compound X (iv)__ conduct
electricity.

Answer 1

The answers of the given questions are as follows -

• A covalent compound X exists as liquid,gas or soft solid.

The internal molecular attraction forces are very weak in cases of the covalent compounds and that's why they can exist in all the the above mentioned three physical states.

• The compound X has low boiling point and low melting point.

Again, the weak internal forces between the molecules of a covalent compound can be easily broken by little amount of energy application. That's why, covalent compounds have lower boiling and melting points.

• In liquid state, the compound X cannot conduct electricity.

The covalent compounds don't have charged particles in their melted state, like the ionic compounds. That's why, the covalent compounds cannot conduct electricity in the melted state.