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How many electrons, protons and neutrons does chlorine have? A: The chemical element chlorine has 17 electrons, 17 protons and 18 neutrons. An atom, which is the fundamental unit of an element, contains an equal number ... Full Answer >
Chlorine. The number of protons in an element is always the same asthe atomic number, which is 17 in this case. In a neutral atom (nocharge), the number of electrons equals thâ¦e number of protons, soit will be 17 electrons also.