Question

How many atoms does one mole of Phosphorus contain?

Answer 1

The number of atoms:

• Phosphorus exists as a tetratomic molecule.
• Hence, there are 4 atoms of phosphorus in one molecule of phosphorus.

1 mole of ${\mathrm{P}}_4$ = $6.022\times {10}^{23}$ molecules of ${\mathrm{P}}_4$(Avogadro number)

1 molecule of ${\mathrm{P}}_4$ = 4 atoms of $\mathrm{P}$

1 mole of ${\mathrm{P}}_4$ = $4\times 6.022\times {10}^{23}$ atoms of $\mathrm{P}$

1 mole of ${\mathrm{P}}_4$ = $2.4088\times {10}^{24}$ atoms of $\mathrm{P}$

= $24.088\times {10}^{23}$ atoms of $\mathrm{P}$