Question

QUESTION 11 Arrange the ions N3-02-, Mg2+, Na+, and F-in order of increasing ionic radius, starting with the smallest f Mg2+, Na+, F. 02. 13- N3- Mg2+ 02- Na+, F- 13.02- Mg2+, F., Na+ N3-02-, F-, Nat, Mg2+

Answer 1

A8, all the ions derived are isoelectric species, means, they all have same number ol electrons in the electronic Shells but their nuclear charge will differe because their differenc in number of prolong in the nucleus. With increase in number of protons in the nucleus the electrons are mane attracted towards nucleus therby causing decrease in Tonic Radius. Ions : Given • N-3 No. el protons - 7 No. o Electrons - 10 • 0-2 - - No. of Protons & Electrons - 10 Pocotons - 11 No. of Protons - 9 No. of Electrons - 10 No. of Protons - 11 No. of Electrons - 10 No. of Pactons - 12 Mg2+ No. of Elecmang - 10 Hence, the increasing Order of ionic Radius is 12. Mg²+ Liinat LaF-1 (80-² <=N-3 Option (a) is correct.