What are isoelectronic species ? The following species are isoelectronic with the noble gas. Arrange these in order of increasing size. , , , .

What are isoelectronic species ? The following species are isoelectron

1.	What are isoelectronic species ? The following species are isoelectronic with the noble gas. Arrange these in order of increasing size. , , , .
Answer» e!Iso-electronic SPECIES are the species that have same NUMBER of ELECTRONS. K^+, S^2-, Cl^- and Ca^2+ has 18 electrons each. Therefore, the order is:Ca^2+ < K^+ < Cl^- < S^2-That's the answer!HOPE it helps :)