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Hydrochloric acid, with the chemical formula HCl, consists of one hydrogen atom and one chlorine atom. Hydrogen typically has one proton and zero neutrons, while chlorine typically has 17 protons and 18 neutrons. Therefore, hydrochloric acid has one proton and zero neutrons from hydrogen, and 17 protons and 18 neutrons from chlorine, totaling 18 protons and 18 neutrons.

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ProfBot

5mo ago

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