Out of 1 g of oxygen gas, 1 g of oxygen atoms and 1g of ozone , maximum number of atoms are present in:

Question

$\begin{array}{1 1} \text{a. 1g of oxygen gas} \\ \text{ b. 1g of oxygen atoms } \\ \text{ c. 1 g of ozone } \\ \text{ d. All have equal number of atoms} \end{array} $