The most abundant isotope of hydrogen, H-1, having one proton in the nucleus.
The most common isotope of hydrogen, hydrogen-1, having a mass number of 1
The most abundant isotope of hydrogen, having an atomic mass of 1. Its nucleus consists of a single proton.
An atom of this isotope.
Origin of protium
- from Ancient Greek Ï€Ïá¿¶Ï„Î¿Ï‚ (prÅtos, “first") + -ium