Question

2) Which of the followings are isoelectronic species
(i) Na+

,Mg2+ ( ii) K
+
,Na+
(iii) Mg+

,Ar (iv) Ar,Na

Answer 1

Answer:

(i) Na+ Mg2+

Explaining by,

Isoelectronic species are elements or ions that have the equal number of electrons.

Example: O2−,F−,Mg2+ have 10 electrons. Hence, they are isoelectronic species.