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2 October, 23:56

One radioactive isotope of calcium has an atomic mass of 47, how many neutrons are in the calcium - 47 nucleus

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  1. 3 October, 03:56
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    Answer: 27 neutrons

    Explanation:

    Recall that the number of protons in the nucleus of an atom = Atomic number.

    Hence, Calcium with mass number 47 and atomic number 20 will have 20 protons

    Therefore, since Mass number = number of protons + neutrons

    47 = 20 + neutrons

    Neutrons = 47 - 20 = 27

    Thus, there are 27 neutrons in radioactive calcium nucleus.
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