Explain why the melting and boiling points of Zn, Cd, Hg are low?

Explain the elevation in boiling point of solution.

Explain why A has lower boiling point than B ?

Which has the highest boiling point ?

Oxygen and sulphur have difference in their melting point and boiling points. Give reason.

Transition metals are very hard and have high melting and boiling points. Give reason.

List two reasons for carbon forming a large number of compounds. Name the type of bonding found in most of its compounds. Why does carbon form compounds mainly by this kind of bonding. Give reason why the carbon compounds: (i) Generally have low melting and boiling points. (ii) Do not conduct electricity in molten state.

Explain why the melting point of a substance gives an indication of the purity of a substance.

All alkali metals have ______melting and boiling points

Boiling point elevation is

Water has high boiling point.