The ionic radii of isoelectronic species N3−,O2− and F− in oA are respectively:
A
1.36,1.40,1.71
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B
1.36,1.71,1.40
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C
1.71,1.40,1.36
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D
1.71,1.36,1.40
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Solution
The correct option is C1.71,1.40,1.36 Among isoelectronic ions, size increases as the negative charge increases.
i.e. F−<O2−<N3−.
So option (c) is the correct answer