The correct order of ionic size of N^(3-...

The correct order of ionic size of `N^(3-), Na^(+), F^(-), Mg^(2+) and O^(2-)` and is :

A

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

B

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

C

`Mg^(2+) lt Na^(+) lt F^(-) lt O^(2-) lt N^(3-)`

D

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

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The correct Answer is:

C

In isoelectronic species (same `e^(-)` ), as Z increases, size decreases

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