આપેલા ઘટકો $O^{2-}, S^{2-}, N^{3-}, P^{3-}$ માટે નીચેના પૈકી કઈ ગોઠવણી વધતી (ઓછાથી વધુ ) આયનીકરણ ત્રિજ્યાનો ક્રમ રજૂ કરે છે ?

Q: આપેલા ઘટકો $O^{2-}, S^{2-}, N^{3-}, P^{3-}$ માટે નીચેના પૈકી કઈ ગોઠવણી વધતી (ઓછાથી વધુ ) આયનીકરણ ત્રિજ્યાનો ક્રમ રજૂ કરે છે ?

a For isoelectronic species ionic radii decreases as the charge on ion decreases. Further on moving down in a group ionic radii increases. Hence the correct order is ${O^{2 - }}\, < \,{N^{3 - }}\, < \,\,{S^{2 - }}\, < \,\,{P^{3 - }}$

Question

A${O^{2 - }}\, < \,{N^{3 - }}\, < \,\,{S^{2 - }}\, < \,\,{P^{3 - }}$
B${O^{2 - }}\, < \,{P^{3 - }}\, < \,\,{N^{3 - }}\, < \,{S^{2 - }}$
C${N^3}\, < \,{O^{2 - }}\, < \,\,{P^{3 - }}\, < \,{S^{2 - }}$
D${N^{3 - }}\, < \,{S^{2 - }}\, < \,\,{O^{2 - }}\, < \,{P^{3 - }}$

JEE MAIN 2014, Diffcult

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Solution

a
For isoelectronic species ionic radii decreases as the charge on ion decreases. Further on moving down in a group ionic radii increases. Hence the correct order is ${O^{2 - }}\, < \,{N^{3 - }}\, < \,\,{S^{2 - }}\, < \,\,{P^{3 - }}$

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