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31-12-2021
Chemistry

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If an element has a mass number of 19 and an atomic number of 9, how many neutrons does the element have? A. 11 B. 19 C. 10 D. 12

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31-12-2021

Answer:

The correct answer is C. 10

Explanation:

subtracting the atomic number from the mass number gives the number of neutrons in an element.

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