Q.

Which one of the following is the correct order of the size of the ions?

Moderate

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By Expert Faculty of Sri Chaitanya

Na+>Mg2+>F−>O2−

O2−>F−>Na+>Mg2+

Mg2+>Na+>F−>O2−

O2−>F−>Mg2+>Na+

answer is B.

(Detailed Solution Below)

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Detailed Solution

For isoelectronic species, Ionic radius ∝1 atomic number Thus, the correct order will be 8O2−>9F−>11Na+>12Mg2+

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