Statement I :  16 grams of ozone contains more number atoms than 16 grams of dioxygen.Statement II : 16 grams of ozone contains less number molecules than 16 grams of dioxygen.

(I) 48 grams of O3 = NA molecules = 3NA atoms ;    16 grams of O3 = NA/3 molecules = NA atoms ;(II) 32 grams of O2 = NA molecules = 2NA atoms ;     16 grams of O2 = NA/2 molecules = NA atoms ;