State any four physical properties of non-metals.

1.	State any four physical properties of non-metals.
Answer» The four physical properties of non-metals are: 1. Non-metals are brittle, i.e. they cannot be beaten into sheets. 2. Non-metals are non-ductile, i.e., they cannot be drawn into wires. 3. They are bad conductors of heat and electricity except carbon (in the form of graphite). 4. They are dull [non-lusturous] [do not shine] except iodine and graphite. 5. They have comparitively low melting & boiling points. 6. They have low densities. 7. They may be solid, liquid or gas at room temperature. Eg: bromine ⇒ liquid non metal. 8. Most of the solid non-metals are soft except carbon (in the form of diamond) 9. They are not strong i.e. they have low tensile strength.

Answer»

The four physical properties of non-metals are:

1. Non-metals are brittle, i.e. they cannot be beaten into sheets.

2. Non-metals are non-ductile, i.e., they cannot be drawn into wires.

3. They are bad conductors of heat and electricity except carbon (in the form of graphite).

4. They are dull [non-lusturous] [do not shine] except iodine and graphite.

5. They have comparitively low melting & boiling points.

6. They have low densities.

7. They may be solid, liquid or gas at room temperature.
Eg: bromine ⇒ liquid non metal.

8. Most of the solid non-metals are soft except carbon (in the form of diamond)

9. They are not strong i.e. they have low tensile strength.

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