A certain atom has 22 protons and 19 electrons. This atom loses an electron. The net charge on the atom is now . If this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be .
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bromine
For example, the neutral bromine atom, with 35 protons and 35 electrons, can gain one electron to provide it with 36 electrons. This results in an anion with 35 protons, 36 electrons, and a 1− charge. It has the same number of electrons as atoms of the next noble gas, krypton, and is symbolized Br−.
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