Template:Infobox element/standard atomic weight/value illustration

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Element (E)
Ar°(E)
Value type
Ar°(E), abridged
or conventional
Mass number
[most stable isotope]
hydrogen 1H [1.007841.00811] Interval 1.0080±0.0002
nitrogen 7N [14.0064314.00728] Interval 14.007±0.001
fluorine 9F 18.998403162±0.000000005 Value ± uncertainty 18.998±0.001
calcium 20Ca 40.078±0.004 Value ± uncertainty 40.078±0.004
technetium 43Tc (none) Most stable isotope [97]
Template documentation
  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in English). doi:10.1515/pac-2019-0603. ISSN 1365-3075.