Question

Which of the following is not a property of non-metals?

(a) They are neither malleable nor ductile
(b) They are brittle
(c) They are sonorous
(d) They are poor conductor of heat and electricity (except graphite)​

Answer 1

Answer:

Non-metals are neither ductile nor malleable. They are a bad conductor of heat and electricity. Also, they are non-sonorous and are brittle

Answer 2

Option (c) They are sonorous - This is not a property of non-metals.

Explanation:

• Non-metals are neither malleable nor ductile
• They have low density compared to metals.
• They also have low melting and boiling points.
• The molecules are held together by weak attraction forces and will break if any external force is applied to them, this is the reason behind the brittleness.
• They are poor conductors of heat and electricity (except graphite)​ and are considered insulators.
• They are non-sonorous, as they cannot produce sound when they strike a surface.

Examples:

Hydrogen, Helium, Carbon, Nitrogen