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3 years ago

9

Alexandra knows that the atomic number of the element potassium, K, is 19. She also knows that one particular isotope of potassi

um has a mass number of 39. How many neutrons can be found in the nucleus of this isotope of potassium?
A) 19

B) 20

C) 39

D) 58

1 answer:

fiasKO [112]3 years ago

8 0

I believe the answer is 58 but I’m not sure

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