The INCORRECT statement regarding the structure of C60 is:
p-Block Elements (Class 11) · Class 11 · JEE Main Previous Year Question
The INCORRECT statement regarding the structure of is:
- a
The six-membered rings are fused to both six and five-membered rings.
- b
Each carbon atom forms three sigma bonds.
- c
The five-membered rings are fused only to six-membered rings.
- d✓
It contains 12 six-membered rings and 24 five-membered rings.
It contains 12 six-membered rings and 24 five-membered rings.
Strategy: Identify the INCORRECT statement about the structure of .
Step 1: Known Facts about C₆₀
- contains 20 hexagonal and 12 pentagonal rings. ✅
- Six-membered rings are fused to both six and five-membered rings. ✅ (Option A is correct)
- Each carbon is hybridised and forms 3 sigma bonds. ✅ (Option B is correct)
- Five-membered rings are fused only to six-membered rings (no two pentagons are adjacent — isolated pentagon rule). ✅ (Option C is correct)
Step 2: Evaluating Option D Option D claims "12 six-membered rings and 24 five-membered rings." This is wrong — the actual numbers are 20 hexagons and 12 pentagons. The statement has both numbers completely reversed/incorrect. ❌
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