Name a non-metal which is tetratomic.

(a). Define non-metals. Give five examples of non-metals. (b). Name a non-metal which conducts electricity. (c). Name a non-metal haivng lustre (shining surface). (d). Name a non-metal which is extremely hard. (e). How do non-metlas react with oxygen? Explain with an example. Give equation of the reaction involved. What is the nature of the product formed ? How will you demonstrate it?

Name a non-metal which is lustrous and a metal which is non-lustrous.

Name a non-metal which is lustrous and a metal which is non-lustrous.

Name the non-metal which is lustrous.

Name a non-metal which is lustrous and a metal which is liquid at the room temperature.

Generally non-metals are non-lustrous. Name one non-metal which is lustrous.

Name a non-metal which is a good conductor of electricity.