griseldadelgado351 griseldadelgado351

02-10-2020
Chemistry

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how many neutrons does a calcium atom have if the mass number is 42

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jsoso102000 jsoso102000

02-10-2020

Answer:

22

Explanation:

calcium has 20 proteins

and given the mass number is 42.

mass number = protons + neutrons

42= 20+ n

n= 42-20

n= 22

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