Question

Give exceptions for the following:

solid non metals are hard

Metals have high boiling and melting points

Answer 1

Phosphorous and Sulphur are solid non metals.But they are soft.So they are exceptions to the statement that solid non metals are hard.

Gallium is a metal which has high boiling point but low melting point.So it is an exception to the statement that metals have high boiling point and high melting point.