What do you understand by isoelectronic species ? Name a species that will be isoelectronic with each of the following atoms or ions. (i) F^(-)"" (ii) Ar"" (iii) Mg^(2+) "" (v) Rb^(+)

What do you understand by isoelectronic species ? Name a species that

1.	What do you understand by isoelectronic species ? Name a species that will be isoelectronic with each of the following atoms or ions. (i) F^(-)"" (ii) Ar"" (iii) Mg^(2+) "" (v) Rb^(+)
Answer» Solution :Number of electrons in ATOM or IONS are same than it is called .isoelectric species.. e.g. `O^(2-) , F^(-) , Na^(+) , Mg^2+)`ions having 10 electrons and isoelectric species. Radius of isoelectric species are different because nuclear charge are different. In isoelectric species, nuclear charge increases radius decreases so radius increases like `Mg^(2+) lt Na^(+) lt F^(-) lt O^(2-) `because nuclear charge decreases like 12, 11, 9, 8.