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8 April, 04:06

Zirconium has an atomic number of 40 and an atomic mass of 91. How many neutrons does it have? A. 40 B. 51 C. 91 D. 131

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  1. 8 April, 04:48
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    40

    Explanation:

    is the answer because the atomic number is also the number or amount of neutrons in a chemical or substance
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