How many atoms are in a molecule of hydrogen?

Answer 1

There are two hydrogen atoms in a hydrogen molecule. It is a diatomic molecule, meaning that there is two atoms in one molecule. Many gases are diatomic. In the Periodic Table there are 11 elements that are gases at Room Temperature: Hydrogen, Helium, Nitrogen, Oxygen, Fluorine, Neon, Chlorine, Argon, Krypton, Xenon and Radon. Of these gases, the ones that are diatomic are: Hydrogen, Nitrogen, Oxygen, Fluorine and Chlorine. One liquid and two solids are also diatomic, the liquid: Bromine, the solids: Iodine and Astatine.

Answer 2

That depends on the molecule. If you mean hydrogen gas, there are two. Otherwise, your answer could be any natural number. (0,1,2,3, etc)