The Cl^- ion has a single negative charge and the atomic number of 17. How many electrons are on its innermost shell?

Question

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The atomic number of 17 corresponds to chlorine (Cl), which has 17 protons. Since the ion has a single negative charge, it has one extra electron, totaling 18 electrons. However, the question asks for the number of electrons on the innermost shell, which, according to the electron configuration principles, always holds a maximum of 2 electrons, regardless of the element.

The Cl- Ion Has a Single Negative Charge and the Atomic

The Cl^- Ion Has a Single Negative Charge and the Atomic