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Potassium-40 (40 K) is a radioactive isotope of potassium which has a long half-life of 1.25 billion years. It makes up about 0.012% (120 ppm) of the total amount of potassium found in nature. Potassium-40 undergoes three types of radioactive decay.
Potassium-40 - symbol 40 K - is a naturally occurring, primordial, radioactive isotope of the chemical element potassium with a half-life of 1.25 billion years; Earth's potassium consists of about 0.0117% (117 ppm) of this isotope, which is responsible for the weak natural radioactivity of the alkali metal.
24 sie 2022 · Potassium-40 (40K) is a radioactive isotope of potassium which has a long half-life of 1.25 billion years. It makes up about 0.012% (120 ppm) of the total amount of potassium found in nature.
K has a nuclear spin of 4, while both of its decay daughters are even–even isotopes with spins of 0. 40 K occurs in natural potassium in sufficient quantity that large bags of potassium chloride commercial salt substitutes can be used as a radioactive source for classroom demonstrations.
14 paź 2021 · Potassium-40 is a naturally occurring radioactive isotope of potassium. Potassium is the chemical element with the symbol K and atomic number 19. Potassium is widely distributed in nature and is present in all plant and animal tissues.
List, data and properties of all known isotopes of Potassium. The chemical element potassium is found in nature in the form of its stable isotopes potassium-39 and potassium-41, and its long-lived radioisotope potassium-40.
Click any isotope in diagram to see its data. Detailed decay information for the isotope potassium-40 including decay chains and daughter products.
