Consider the following species: N 3- , O 2- , F - , Na + , Mg 2+ and Al 3+ (a) What is common in them? (b) Arrange them in the order of increasing ionic radii.
(a) Each of the given species (ions) has the equal wide variety of electrons (10 electrons). Hence, the given species are isoelectronic. (b) The ionic radii of isoelectronic species will increase with a lower withinside the magnitudes of nuclear fee. The association of the given species so as in their growing nuclear rate is as follows: N 3- < O 2- < F - < Na < Mg 2 < Al 3 Nuclear price = 7 8 9 11 12 13 Therefore, the association of the given species so as in their growing ionic radii is as follows: Al 3 < Mg 2 < Na < F - < O 2- < N 3
