Answer
1 mol $O_2$ has the greater number of atoms.
Work Step by Step
1 molecule $O_2$:
- 2 Oxygen atoms.
1 mol $O_2$:
$6.022 \times 10^{23}$ $O_2$ molecules;
Each $O_2$ molecule has 2 atoms:
Which means: $6.022 \times 10^{23} * 2 = 1.2044 \times 10^{24}$ atoms.
This is more than $6.022 \times 10^{23}$.
Thus, 1 mol $O_2$ has the greater number of atoms.
