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JEE Main201910 Apr 2019Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual

The number of pentagons in C 60 and trigons (triangles) in white phosphorus, are;

Options

  1. A12 and 3
  2. B20 and 4
  3. C20 and 3
  4. D12 and 4

Correct answer

D. 12 and 4

Step-by-step solution

C 60 is a molecule that consists of 60 - C atoms, arranged as 12 pentagons and 20 hexagons. It has 4 trigons.

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