The chloride ion (Cl–) has a specific number of protons and electrons based on its atomic structure.
A chlorine atom has an atomic number of 17, which means it has 17 protons in its nucleus. In a neutral chlorine atom, there are also 17 electrons balancing the positive charge of the protons.
When chlorine gains an electron to become a chloride ion (Cl–), it now has an additional electron, resulting in a total of 18 electrons. Since the number of protons remains unchanged at 17, a chloride ion carries a net negative charge due to the extra electron.
In summary, for the Cl– ion:
- Number of Protons: 17
- Number of Electrons: 18