Questions
Consider the isoelectronic species, and . The correct order of increasing length of their radii is :
detailed solution
Correct option is B
Ionic radii for isoelectronic species decrease as nuclear charge rises (i.e., no. of protons). The cation with the greater +ve charge will therefore have a smaller radius and the anion with the greater -ve charge will have a bigger radius for isoelectronic species.
Ionic radii should therefore increase in the following order: .
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