Protium
Protium, also called hydrogen-1, is the most common isotope of hydrogen. The atomic nucleus of protium has one proton and no neutrons. It is one of two stable isotopes that has more protons than neutrons (the other is helium-3).
Almost all (more than 99.9%) hydrogen atoms are protium.[1] This means protium is the most common isotope in the universe.
Sources
[change | change source]- ↑ Bleakney, Walker; Gould, Austin J. (1933). "The Relative Abundance of Hydrogen Isotopes". Physical Review. 44 (4): 265–268. Bibcode:1933PhRv...44..265B. doi:10.1103/PhysRev.44.265.
