Question

In a vessel 2g O₂, 2g H₂ and 2g N₂ are present. Which has the largest number of atoms?

(a) O₂

(b) H₂

(c) N₂

(d) All have equal number of atoms

Answer 1

Correct option is (b) H₂

No. of moles in 2g each of O₂, H₂ and N₂ are

\(\frac 2{32} = \frac 1{16}, \frac 22 = 1\) and \(\frac 2{28}= \frac1 {14}\) respectively.

Hydrogen has the largest number of molecules as its numbers of moles is maximum.