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Hydrogen (1 H) has three naturally occurring isotopes: 1 H, 2 H, and 3 H. 1 H and 2 H are stable, while 3 H has a half-life of 12.32(2) years. [3] [nb 1] Heavier isotopes also exist; all are synthetic and have a half-life of less than 1 zeptosecond (10 −21 s). [4] [5] Of these, 5 H is the least stable, while 7 H is the most.
3.1 abundance, half-life trace ... 5.1 Isotope decay example. 6 Standard atomic weight. ... Main isotopes of hydrogen; Main isotopes Decay; abundance half-life (t 1/2)
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
No description. Template parameters [Edit template data] Parameter Description Type Status name name no description Unknown optional mass_number mass_number no description Unknown optional symbol symbol no description Unknown optional image image no description Unknown optional image_caption image_caption no description Unknown optional alternate_names alternate_names no description Unknown ...
Print/export Download as PDF; Printable version; ... Pages in category "Isotopes of hydrogen" The following 14 pages are in this category, out of 14 total.
Hydrogen has three naturally occurring isotopes, denoted 1 H, 2 H and 3 H. Other, highly unstable nuclei (4 H to 7 H) have been synthesized in the laboratory but not observed in nature. [39] [40] 1 H is the most common hydrogen isotope, with an abundance of >99.98%.
The amount of liquid-vapor equilibrium fractionation for hydrogen isotopes is about 8x that of oxygen isotopes at Earth surface temperatures, which reflects the relative mass differences of the two isotope systems: 2 H is 100% heavier than 1 H, 18 O is 12.5% heavier than 16 O. Above the boundary layer, there is a transition zone with relative ...
The template provides a standardised table header for a List of isotopes, as is used in each of the 118 Isotopes of <element> articles. Parameters allow for adjustment of the table header structure, references and table footnotes. This header does not change existing rows: values, isotope-specific footnotes, structure, nor split decay routes ...
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