JEE PYQ: P Block Elements Question 57
Question 57 - 2019 (10 Apr Shift 2)
The number of pentagons in $\text{C}_{60}$ and trigons (triangles) in white phosphorous, respectively, are:
(1) 20 and 3
(2) 12 and 4
(3) 12 and 3
(4) 20 and 4
Show Answer
Answer: (2)
Solution
Number of pentagons in $\text{C}_{60}$ (Buckminsterfullerene) $= 12$. Number of triangles in $\text{P}_4$ (White phosphorous) $= 4$.