1How do we know that the valency of carbon is four? Explain with reason.
2What is catenation? What does this property produce?
3Distinguish between allotropes and allotropy with an example.
4Why does graphite conduct electricity while diamond does not?
5Name the crystalline and amorphous allotropes of carbon.
6Write any four physical properties of carbon.
7Why does chemistry need a separate branch just for carbon compounds?