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31K gets one mention and some links, but is otherwise ignored in the article. Do we fully include or fully exclude it? Hcobb ( talk) 15:47, 11 October 2020 (UTC)
From this article:
"All other potassium isotopes have half-lives under a day, most under a minute. The least stable is 31K, a three-proton emitter discovered in 2019; its half-life was measured to be shorter than 10 picoseconds.[4][5]"
Hcobb ( talk) 18:10, 12 October 2020 (UTC)
Shouldn't 42K be a trace radionuclide because on the Isotopes of argon page, it says 42Ar is a trace radionuclide. 42Ar β− decays into 42K so shouldn't 42K be a trace radionuclide? - 322UbnBr2 ( Talk | Contributions | Actions) 03:40, 14 November 2020 (UTC)
Should some mention be made of the contribution of 40K to the geothermal gradient, assuming it is still accepted as such? Vaughan Pratt ( talk) 06:20, 21 July 2021 (UTC)
"40K has the longest known half-life for any positron-emitter nuclide." I suppose that this refers to the partial half-life of beta plus decay. When just talking about the half-life, 138La has a longer one. 2A04:CEC0:1011:B1F1:C5E3:F416:5CD7:1B03 ( talk) 23:20, 13 November 2023 (UTC)