Among the following stoichiometric equation is

$\left[\underset{2 \mathrm{atoms}}{{\mathrm{H}}_2}+\underset{1 \mathrm{atoms}}{\frac{1}{2}{\mathrm{O}}_2}\to \underset{2 \mathrm{atoms} \mathrm{of} \mathrm{H},1 \mathrm{atoms} \mathrm{of} \mathrm{O}}{{\mathrm{H}}_2\mathrm{O}}\right]$because in stoichiometric equation the number of atoms of each element on both sides should be equal.