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

Options

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+)`

Answer

C

Explanation

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