The correctsequence whichshowsdecreasingorder of the ionicradii ofthe

1.	The correctsequence whichshowsdecreasingorder of the ionicradii ofthe elementis
Answer» `O^(2-)GT F^(-)gt Na^(+) gt Mg^(2+) gt A1^(3+)` `A1^(3+)gt Mg^(2+) gt Na^(+) gt F^(-)gt O^(2-)` `Na^(+)gt Mg^(2+) gt A1^(3+) gt O^(2-) gt F^(-)` `Na^(+) gt F^(-)gt Mg^(2+)gt O^(2-)gt A1^(3+)` Solution :For isoelectronic ions , followingthe samereasoningas discussed ASANS .27the correctorderof decreasingionicradii is: `O^(2-)gt F^(-) gt Na^(+)gtMg^(2+) gt A1^(3+)` i.e.,Option(a) ISCORRECT.

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