Allotropy and Allotropes:
The phenomenon of the existence of a substance in various physical forms but with the same chemical properties is called Allotropy and the different forms are called Allotropes.
Allotropes of Carbon:
Carbon exists in the following allotropic forms.
i. Diamond: It is a hard, beautiful crystalline substance.
ii. Graphics: It is a soft, greyish black crystalline substance.
iii. Amorphous Carbon: Black residue left when carbon compounds are heated. Different varieties of amorphous carbon are:
- Wood charcoal
- Bone charcoal
- Lamp black
- Carbon black
- Gas carbon
- Petroleum coke