potassium-40

Fetched 2026-10-26 (cache).

Synonyms: potassium, potassium-42, potassium 40, potassium-43, potasium, potassic, potassium 42, dipotassium, potassium 43

Antonyms: potassium, potassium-42, potassium 40, potassium-43, potasium, potassic, potassium 42, dipotassium, potassium 43

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|isotope}} A naturally-occurring [[radioactive]] [[isotope]] of [[potassium]], {{nuclide|40|19|K}}, having 19 [[proton]]s and 21 [[neutron]]s, and a [[half-life]] of 1.3 billion years; it is the chief source of natural radioactivity in living tissue

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