Overview
Hydrogen is the simplest element with one proton and one electron and forms H2 as a diatomic gas under standard conditions.
Properties
It is colorless, odorless, highly flammable and has the lowest atomic mass of all elements.
Occurrence and Uses
Hydrogen is abundant in the universe, used in ammonia production, refining, and emerging low carbon energy applications.
Isotopes and Safety
Stable isotope H 1 dominates; deuterium and tritium exist with tritium being radioactive and handled with radiological controls.