Question

Give 1 exeptional property of mtals nd non metals

Answer 1

Exceptional property of metals is as follows: 1) Except mercury, all metals are solids at room temperature. Mercury is the only metal which is liquid at room temperature. 
Exceptional property of non-metals is as follows:
1) Non-metals are soft except diamond which is the hardest substance.

Answer 2

Metals are solids except merury

Non-Metals are non-lustrous except graphite