# Solve this following

Question:

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

1. 12 and 3

2. 20 and 4

3. 12 and 4

4. 20 and 3

Correct Option: , 3

Solution:

Total No. of pentagons in $\mathrm{C}_{60}=12$

Total no. of trigons (triangles) in white phosphorus $\left(\mathrm{P}_{4}\right)=4$