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Meaning of potassium-40 | Babel Free

Noun CEFR C1

Definitions

A naturally-occurring radioactive isotope of potassium, ⁴⁰₁₉K, having 19 protons and 21 neutrons, and a half-life of 1.3 billion years; it is the chief source of natural radioactivity in living tissue

uncountable

CEFR level

C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
See all C1 English words →

See also

potassium-42 potassium-43 potassium-argon dating potassoxyl Potation potato

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