Cl & K ions are isoelectronic with Ar.
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Argon has 18 electrons
Anions isoelectronic with argon: Cl-, S2-, P3-
Cations isoelectronic with argon: K+, Ca2+
This is the electrical charge of the ion.
The noble gas electron configuration of an iron 3 ion (Fe3+) is [Ar]3d^5. This means that the ion has lost three electrons, leaving behind a 3+ charge, and the remaining electrons are arranged based on the electron configuration of argon.
No, the charge on an acetate ion (CH3COO-) is -1.
The charge on the superoxide ion (O2-) is -1.
An ion is an atom with a positive or negative charge.