Potassium-40 (40k) is a radioactive isotope of potassium (atomic number 19). how many neutrons are located in the nucleus of potassium-40?

asked Nov 7, 2019 121k views

4 votes

by Chnet

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5 votes

Number of neutrons = mass number - atomic number = 40 - 19 = 21 answer

Keramat answered Nov 11, 2019

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