What is isoelectronic series? Name a series that will be isoelectronic with each of the following atom or ions .
(b) `Ar`

Explanation

lons having the same of electrons but different of protons is called isoelectronic series. In isoelectronic series the size of the ion decreases with increases with in atomic number.
(b) `P^(-3) S^(-2) Cl^(-) Ar K^(+) Ca^(2+) Sc^(3+)`