Question

no. of atoms present in 2 moles of p4 (phosphorous)​

Answer 1

One mole of any type of molecule contains 6.02 X 10E23 molecules, so one mole of P4 would contain 6.02 X 10E23 molecules of P4. Since there are 4 atoms of phosphorus per molecule of P4, multiply 6.02 X 10E23 molecules x 4 to get 2.408 x 10E24 atoms per mole of P4.