The formula for chlorine gas, as opposed to elemental chlorine, is Cl2.
The chemical formula is NH3
The chemical formula for Hydrogen gas is H2
There is no such thing as fluoride gas.Fluorine gas is F2
The chemical formula for hydrogen chloride gas, also known as hydrochloric acid gas, is HCl.
The chemical formula for Hydrogen gas is H2
The chemical formula for helium is He. It is a noble gas with an atomic number of 2.
Formula: CH4
Formula: N2
Formula: PCl3
There is no known gas with the chemical formula C12.
Assuming that you mean Hydrogen, its formula is H2, hydrogen is diatomic molecule
The chemical formula of ammonia gas is NH3.