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10 March, 16:26

How to find the mass number of an atom with 45 neutrons and 35 electrons?

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  1. 10 March, 18:20
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    Mass number = protons + neutrons

    protons = electrons

    so 35 electrons = 35 protons

    So 35 protons + 45 neutrons =

    80

    The element is Bromine with the symbol: Br
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