Exceptions in Physical Properties of Metals and Non Metals

Properties of Metals

Exceptions

Lustre

None

Hardness

Sodium metal can be cut with a knife, it is soft in nature.

Malleability

Zinc, Arsenic, Mercury

Ductility

Mercury, Zinc, 

Good conductor of heat

Mercury, Lead

Good conductor of electricity

Tungsten 

Sonorosity

Mercury

High Melting Point

Gallium and Caesium have low M.P

High Boiling Point

Sodium, Potassium,

Mercury

Solid Metals

Mercury

Properties of Non-metals

Exceptions

Dull 

Iodine, Diamond

Softness

Diamond

Brittleness

(only for solids)

Diamond

Malleable

None

Ductile

None

Bad conductor of heat

Graphite

Bad conductor of electricity

Graphite

Low Melting point

Diamond

Low Boiling point

Diamond

State

Bromine is a liquid non metal.