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The number of pentagons and hexagons in $C_{60}$ in trigons (triangles)in white phosphours are respectively:

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12 and 20

20 and 3

20 and 12

12 and 4

answer is A.

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Detailed Solution

Total no. of pentagons in C₆₀=12 and 20 hexagons.
Total no. of trigons (triangles) in white phosphorus (P₄ )=4.

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