What is a possible ion that has this electron configuration: #1s^2, 2s^2, 2p^6, 3s^2, 3p^6#?

1 Answer
Nov 6, 2016

Answer:

It would be the chloride ion, with a charge of #1^(-)"#.

Explanation:

A neutral chlorine atom has the electron configuration #"1s"^2"2s"^2"2p"^6"3s"^2"3p"^5"#. In an ionic compound, chlorine gains the sixth #"3p"# electron, most likely when reacting with a metal such as sodium (Na), forming the chloride ion, #"Cl"^(-)"#.

The image below represents the formation of the ionic compound sodium chloride, #"NaCl"#. The bond is formed by the electrostatic attraction between the positive and negative ions.

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