The correct option is C 1.204×1024
Given, mass of phosphorus = 62 g
The gram atomic mass (GAM) of phosphorus = 31 g
Also, 1 mole = 6.023×1023 particles
Number of moles = 6231 = 2 moles
∴ The number of atoms present in 62 grams of phosphorous = 2×NA
= 12.04×1023=1.204×1024 atoms.