Carbon Allotropy
Easychemistry
Which pair are allotropes of carbon?
Select the correct option:
Solution
Incorrect! Answer:
Graphite and Diamond
- Allotropy: The existence of an element in two or more different forms in the same physical state, which differ in their internal structure and properties.
- Carbon Allotropes:
- Graphite: Hexagonal layers, sp2 hybridized, conducts electricity due to delocalized electrons.
- Diamond: 3D tetrahedral network, sp3 hybridized, hardest natural substance, insulator.
- Fullerenes: Spherical cages like C60.
- Exclusion: CO2 and CH4 are compounds of carbon, not allotropes (which must be pure carbon). Carbon black is an amorphous form of carbon.
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About This Question
- Subject
- chemistry
- Chapter
- p-block elements
- Topic
- carbon allotropy
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Graphite and Diamond
- Allotropy: The existence of an element in two or more different forms in the same physical state, which differ in their internal structure and properties.
- Carbon Allotropes:
- Graphite: Hexagonal layers, sp2 hybridized, conducts electricity due to delocalized electrons.
- Diamond: 3D tetrahedral network, sp3 hybridized, hardest natural substance, insulator.
- Fullerenes: Spherical cages like C60.
- Exclusion: CO2 and CH4 are compounds of carbon, not allotropes (which must be pure carbon). Carbon black is an amorphous form of carbon.
This easy difficulty chemistry question is from the chapter p-block elements, covering the topic of carbon allotropy. It appeared in the 2025 exam.
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