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The correct sequence which shows decreas...

The correct sequence which shows decreasing order of the ionic radii of the elements is

A

`AI^(3+)gt Mg^(2+)+Na^(+)gt F^(-)O^(2-)`

B

`Na^(+)gtMg^(2+)gtAI^(3+)gtO^(2-)gtF^(-)`

C

`Na^(+)gtF^(-)Mg^(2+)gtO_(2-)gtAI^(3+)`

D

`O^(2-)gtF^(-)Na^(+)gtMg^(2+)gtAI^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
D
The correct sequence which shows …………
For isoelectronic species, ionic radii
`prop (1)/("nuclear charge")`
So, correct order of ionic radii is
`8^(O^(2-))gt g^(F^(-))gt 11^(Na^(+))gt 12^(Mg^(2+))gt 13^(A//3+)`
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