Because it is very light, helium is the gas of choice to fill airships such as the Goodyear blimpHelium laser
Helium ek chemical element hae, jiske chemical symbolHe aur atomic number 2 hae.
Ii bina rang ke ek gas hae, jon ki duusra element re react nai hoe hae. Iske halluk hoe ke kaaran, iske baloon me kaam e lawa jaawe hae.