Which of the following is NOT an allotrope of carbon?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e Trisulfur.
Trisulfur (S3) is not an allotrope of carbon. Allotropes of carbon include graphite, diamond, fullerene, graphene, carbon nanotubes, and amorphous carbon. Trisulfur, on the other hand, is a molecule composed of three sulfur atoms and is not related to carbon's allotropes.