Is calcium isoelectronic with argon?
Which atom is the sodium ion isoelectronic with?
For example, the K+ ion is isoelectronic with argon. Potassium has 19 electrons and 1 is in the outermost shell: a valence electron.
It is also possible for cations, positively charged ions, to be isoelectronic with the argon atom in its ground state. Like all Group 2 (alkali-earth) metals, calcium will lose 2 electrons from its highest energy level to form a cation with a charge of 2+.
The chemical species isoelectronic to Ar are phosphide ion (P3− ), sulfide ion (S2− ), chloride ion (Cl− ),…
What element is the calcium ion isoelectronic with?
the very same as argon. Therefore, K+ and Ar are said to be isoelectronic. Ca2+ is also electronic with Ar, for example, and so is Cl-. It should be noted that isoelectronic series do not have to include a noble gas.