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For Na^(+),Mg^(2+),F^(-) and O^(2-), the...

For `Na^(+),Mg^(2+),F^(-) and O^(2-)`, the correct order of increasing ionic radii is :

A

`O^(2-) lt F^(-) lt Na^(+) lt Mg^(2+)`

B

`Na^(+) lt Mg^(2+) lt F^(-) lt O^(2-)`

C

`Mg^(2+) lt Na^(+) lt F^(-) lt O^(2-)`

D

`Mg^(2+) lt O^(2-) lt Na^(+) lt F^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
All species are isoelectronic `(10e^(-))`.
isoelectronic series, when negative charge increases the radius of ion increases.
`:. Mg^(2+) lt Na^(+) lt F^(-) lt O^(2-)`
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