Question

which of the following have maximum no of atoms [o] dioxygen ,and ozone in 1 gm sample of each

Answer 1

As O2 is diatomic,
1 mole of o2 is 32g  (1 mole of O = 16g)
1 gram = 1/32 = 0.031
So, number of atoms = 0.031 x 6.023 x 10 to the power 23 x 2 = 3.76 x 10 to the power 22.

For O3,
1 mole = 48g  (1 mole of O = 16g)
1 gram = 1/48 = 0.020
So, number of atoms = 0.020 x 6.023 x 10 to the power 23 x 3 = 3.6138e+22

Answer 2

The ozone in 1 gm has the maximum no of atoms.