top of page

Hydrogen is the chemical element with the symbol H and atomic number 1. With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table. Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass. The most common isotope of hydrogen, termed protium (name rarely used, symbol 1H), has one proton and no neutrons. (source: wikipedia)

bottom of page