How many electrons neutrons and protons are in cluorine?

Answer 1

Chlorine exist as two isotopes(same number of electrons and protons but different number of neutrons), although there are traces of one more but we're not to sure.

~70% of Chlorine is Chlorine-35 which contains 17 electrons and 18 neutrons

~30% of Chlorine is Chlorine-37 which contains 17 electrons and 20 neutrons

and ≤1% of Chlorine-36........

Answer 2

Chlorine has 17 electrons, 17 protons, and typically 18 neutrons (its most common isotope is chlorine-35 with 17 neutrons and there is also a less common isotope, chlorine-37, with 20 neutrons).