Neutral aluminium-27 has 13 electrons and 14 neutrons. Bromide ion-80 has 36 electrons and 45 neutrons. Mercury-201 ion has 78 electrons and 121 neutrons. Neutrons equal mass number minus protons and electrons account for charges.
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Neutral aluminium-27 has 13 electrons and 14 neutrons. Bromide ion-80 has 36 electrons and 45 neutrons. Mercury-201 ion has 78 electrons and 121 neutrons. Neutrons equal mass number minus protons and electrons account for charges.