Consider the following species. N3- , O2- , F- , Na+ , Mg2+ and Al3+1

1.	Consider the following species. N3- , O2- , F- , Na+ , Mg2+ and Al3+1. What is common in them? 2. Arrange them in order of increasing ionic radii.
Answer» 1. Each one of these ions contains 10 electrons and hence these are isoelectronic ions, 2. The ionic radii of isoelectronic ions decrease with the increase in the magnitude of the nuclear charge. Among the isoelectronic ions: N^3- , O^2- , F^- , Na⁺ , Mg²⁺ and Al³⁺ nuclear charge increase in the order: N^3- < O²< F^-< Na⁺ < Mg²⁺ < Al³⁺ Therefore, the ionic radii decrease in the order: N^3- > O²> F^-> Na⁺ > Mg²⁺ > Al³⁺

Consider the following species. N3- , O2- , F- , Na+ , Mg2+ and Al3+1. What is common in them? 2. Arrange them in order of increasing ionic radii.

Answer»

1. Each one of these ions contains 10 electrons and hence these are isoelectronic ions,

2. The ionic radii of isoelectronic ions decrease with the increase in the magnitude of the nuclear charge. Among the isoelectronic ions: N^3- , O^2- , F^- , Na⁺ , Mg²⁺ and Al³⁺

nuclear charge increase in the order:

N^3- < O²< F^-< Na⁺ < Mg²⁺ < Al³⁺

Therefore,

the ionic radii decrease in the order:

N^3- > O²> F^-> Na⁺ > Mg²⁺ > Al³⁺

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Consider the following species. N3- , O2- , F- , Na+ , Mg2+ and Al3+1. What is common in them? 2. Arrange them in order of increasing ionic radii.

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