Question

Physical properties of non metals 0 with examples and expectation

Answer 1

Physical properties of Non metals are :-

• They are brittle.
• They exist as solid, liquid and gas.
• They are non lustrous except diamond and iodine.
• They are not conductor of heat and electricity except graphite.
• Low melting and boiling point except diamond and graphite.
• They have low density.
• They are non malleable and ductile.

Example of non metal :-

• Carbon
• Hydrogen
• Sulphur
• Chlorine

Answer 2

Physical Properties of Nonmetals :

• Physical State: Most of the non-metals exist in two of the three states of matter at room temperature: gases (oxygen) and solids (carbon). Only bromine exists as a liquid at room temperature.

• Non-Malleable and Ductile: Non-metals are very brittle, and cannot be rolled into wires or pounded into sheets.

• Conduction: They are poor conductors of heat and electricity.

• Luster: These have no metallic luster and do not reflect light.

• Melting and Boiling Points: The melting points of non-metals are generally lower than metals, but are highly variable.

Seven non-metals exist under standard conditions as diatomic molecules:  H2(g) ,  N2(g) ,  O2(g) ,  F2(g) ,  Cl2(g) ,  Br2(l) ,  I2(s) .