Astrophysics (Index)About

1H

(protium, 1hydrogen)
(hydrogen isotope with no neutrons)

Hydrogen with no neutrons (mass number 1) has symbol 1H. It has the name protium (its nucleus consists of a single proton) but that name is not commonly used in astrophysics. In some contexts (such discussions of main sequence stars versus brown dwarfs) the term hydrogen is often used meaning 1H, as something different than deuterium 2H.


(hydrogen,isotope,physics)
Further reading:
https://en.wikipedia.org/wiki/Isotopes_of_hydrogen#Hydrogen-1_(protium)
https://en.wikipedia.org/wiki/Hydrogen
https://www.britannica.com/science/protium-isotope
https://www.vedantu.com/chemistry/protium
https://pressbooks.online.ucf.edu/astronomybc/chapter/5-4-the-structure-of-the-atom/
https://www.quirkyscience.com/three-isotopes-hydrogen-protium-deuterium-tritium/
https://enthu.com/knowledge/chemistry/isotopes-of-hydrogen/

Referenced by pages:
brown dwarf (BD)
deuterium burning
exotic star
H-alpha (Ha)
hydrogen burning
hydrogen deuteride (HD)
isotope
Lyman alpha (Ly-α)
neutron

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