Identify a substance that is NOT an allotrope of carbon.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Phosphorus.
Allotropes are different forms of the same element that exist in the same physical state but have distinct structures and properties. Carbon has several allotropes. Phosphorus is not an allotrope of carbon.
- Diamond: Carbon atoms arranged in a tetrahedral lattice, forming a very hard and transparent structure.
- Graphite: Carbon atoms arranged in layers of hexagonal lattices, where the layers can slide over each other easily, making it a good lubricant and conductor of electricity.