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1 January, 22:27

Determine how many protons, neutrons, and electrons are in a bromine atom that has a mass number of 73

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  1. 1 January, 22:44
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    Br-73

    The 73 means that the number of protons + neutrons = 73

    We can find the number of protons by looking at a periodic table as that is unique to each element. Bromine has 35 protons.

    It will have 73 - 35 = 38 neutrons.

    Since this is a neutral element, the number of electrons will be equal to the number of protons. It will have 35 electrons.

    35 protons, 38 neutrons, 35 electrons.
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