The correct order of radii is:
Show Hint
- N < Be < B
- F < O\textsuperscript2− < N\textsuperscript3−
- Na < Li < K
- Fe\textsuperscript3+ < Fe\textsuperscript2+ < Fe\textsuperscript4+
The Correct Option is B
Solution and Explanation
Step 1: Identifying species. The ions F\textsuperscript−, O\textsuperscript2−, and N\textsuperscript3− are isoelectronic.
Step 2: Effect of nuclear charge. Higher nuclear charge results in smaller radius.
Step 3: Ordering radii. F < O²⁻ < N³⁻
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