PHYSICAL PROPERTIES OF NON METALS
- There are very few non-metals as compared to metals.
- The non-metals are either solids or gases except bromine which is a liquid.
- Some of the examples of non-metals are carbon, sulphur, iodine, oxygen, hydrogen, etc.
- Iodine is a non-metal but it is lustrous.
- Carbon is a non-metal that can exist in different forms. Each form is called an allotrope.
- Diamond, an allotrope of carbon, is the hardest natural substance known and has a very high melting and boiling point.
- Graphite, another allotrope of carbon, is a conductor of electricity.
- Alkali metals (lithium, sodium, potassium) are so soft that they can be cut with a knife.
- They have low densities and low melting points.