Which of the following has maximum number of molecules

(1) ½ mole=½N molecules

(2) $\frac{16}{46}\mathrm{N} \mathrm{molecules}$

(3) $\frac{1}{4}\mathrm{N} \mathrm{molecules}$

(4) 1N molecules.

2gm Hydrogen has maximum number of molecules than others.