hydrogen-1

Noun

Meaning

hydrogen-1 (uncountable)

Synonym for protium (most common isotope of hydrogen)

Examples

For hydrogen-1, the quantity is about 1/1836 (i.e. the electron-to-proton mass ratio). Source: Internet

Nearly all deuterium found in nature was produced in the Big Bang 13.8 billion years ago, as the basic or primordial ratio of hydrogen-1 (protium) to deuterium (about 26 atoms of deuterium per million hydrogen atoms) has its origin from that time. Source: Internet

The name refers to examination of protons as they occur in protium (hydrogen-1 atoms) in compounds, and does not imply that free protons exist in the compound being studied. Source: Internet

Thus deuterium accounts for approximately 0.0156% (or on a mass basis 0.0312%) of all the naturally occurring hydrogen in the oceans, while the most common isotope ( hydrogen-1 or protium) accounts for more than 99.98%. Source: Internet

For hydrogen-1, hydrogen-2 ( deuterium ), and hydrogen-3 ( tritium ) the constant must be slightly modified to use the reduced mass of the system, rather than simply the mass of the electron. Source: Internet

However, other astronomical bodies are found to have different ratios of deuterium to hydrogen-1. Source: Internet

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