MP Board · Class 11 · Chemistry · Classification of Elements and Periodicity in PropertiesThe correct decreasing order of ionic radii for the isoelectronic species $N^{3-}, O^{2-}, F^-$ is:
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Step-by-Step Solution
Among isoelectronic species, as nuclear charge ($Z$) increases, ionic radius decreases. $N^{3-} (Z=7) > O^{2-} (Z=8) > F^- (Z=9)$.
Detailed Options Breakdown
Option : $N^{3-} > O^{2-} > F^-$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 1: $F^- > O^{2-} > N^{3-}$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Classification of Elements and Periodicity in Properties.
Option 2: $O^{2-} > F^- > N^{3-}$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Classification of Elements and Periodicity in Properties.
Option 3: $N^{3-} = O^{2-} = F^-$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Classification of Elements and Periodicity in Properties.
💡 Study Guide: This question tests core syllabus concepts from Classification of Elements and Periodicity in Properties. For formulas, key summaries, and mock exam reference guides, read the full Classification of Elements and Periodicity in Properties Revision Notes.