alleryThe two allotropes of carbon found naturally are
AOnly diamond
BDiamond and Buckminsterfullerene only
CDiamond and graphite
DCoke and graphite only
Answer & Solution
Correct answer: C. Diamond and graphite
1. Allotropes are different structural forms of the same element.
2. Your syllabus lists diamond and graphite as naturally occurring crystalline allotropes.
3. Diamond: hardest natural substance; each C bonded to 4 others in a tetrahedron.
4. Graphite: layered soft structure; conducts electricity due to delocalised π electrons.
_Source: syllabus Science, Ch 4 "Carbon and its Compounds", §4.1_
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