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12 February, 02:21

How many neutrons are in an isotope of nitrogen-16?

A. 14

B. 9

C. 10

D. 7

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Answers (1)
  1. 12 February, 02:28
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    Mass number = number of protons + number of neutrons

    number of protons = atomic number = 7

    number of neutrons = mass number - number of protons=16-7=9

    Answer is B. 9.
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