Question

Name a non-metal that is : 

1. a good conductor of heat and electricity 

2. hardest naturally occurring substance 

3. used to kill germs in water

4. lustrous

5. used for filling into electric bulbs

6. used for cancer therapy

7. liquid at room temperature

Answer 1

1. a good conductor of heat and electricity: Graphite (Carbon) 

2. hardest naturally occurring substance: Diamond (Carbon) 

3. used to kill germs in water: Chlorine

4. lustrous: Iodine 

5. used for filling into electric bulbs: Argon 

6. used for cancer therapy: Radon 

7. liquid at room temperature: Bromine