Answer : The correct option is, (3) brittleness
Explanation :
The properties of nonmetallic solids are :
- Nonmetallic solids are brittle in nature.
- They are non-malleable and ductile.
- Nonmetallic has low thermal conductivity. That means they are poor conductor of electricity.
- Nonmetallic has low electrical conductivity. That means they are poor conductor of heat.
- They are non-lustrous.
- The melting point and boiling point of non metals are lower than the metals.
Hence, the brittleness is a property of most nonmetallic solids
