Hydrogen is the simplest and most abundant element in the universe. It consists of just one proton and one electron, making it the lightest element on the periodic table.
When we talk about the number of atoms in hydrogen, we are usually referring to a specific quantity of hydrogen, such as a mole. A mole is a unit of measurement used in chemistry to express amounts of a chemical substance. One mole of any substance contains exactly 6.02214076 × 1023 particles (atoms, molecules, ions, etc.), which is known as Avogadro’s number.
Therefore, one mole of hydrogen atoms contains 6.02214076 × 1023 hydrogen atoms. This number is incredibly large and is used to bridge the gap between the atomic scale and the macroscopic scale in chemistry.
In summary, the number of atoms in hydrogen depends on the quantity you are considering. For one mole of hydrogen, there are 6.02214076 × 1023 hydrogen atoms.