Consider the isoelectronic species, Na^(+), Mg^(2+), F^(-) and O^(2). The correct order of increasing length of their radii is ........

Consider the isoelectronic species, Na^(+), Mg^(2+), F^(-) and O^(2).

1.	Consider the isoelectronic species, Na^(+), Mg^(2+), F^(-) and O^(2). The correct order of increasing length of their radii is ........
Answer» `F^(-) LT O_(2)^(-) lt Mg^(2+) ltNa^(+)` `Mg^(2-) lt Na^(+) lt F^(-) lt O^(2-)` `O^(2-) lt F^(-2) lt Na^(+) lt Mg^(2+)` `O^(2-) lt F^(-) lt Mg^(2+) lt Na^(+)` Solution :For the isoelectronic species IONIC radii is inversely proportional to the atomic numbers ionic radii `prop (1)/("atomic number")` As the +ve charge decreases, the IONICRADII increases. As the -ve charge increases, the ionic radii also increase.