Chemistry
Grade-8
Easy
Question
In which of the given substances are the carbon atoms not present in a regular pattern?
- Graphite
- Diamond
- Coal
- Fullerenes
Hint:
It is used to ignite fire for cooking and in factories.
The correct answer is: Coal
The correct option is c)Coal.
The carbon atoms in charcoal are arranged in a 2D sheet, with each carbon atom bonded to three other carbons to form a hexagonal ring. These layers are held together by weak bonding forces called van der Waals forces. This is why coal is so soft. As it is amorphous it has irregular arrangement of carbon atoms.
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