Which is the correct order of ionic radii given below?

1.	Which is the correct order of ionic radii given below?
Answer» `Ca^(2+) gt K^(+) gt Cl^(-) gt S^(2-) gt P^(3-)` `P^(3-) gt S^(2-) gt Cl^(-) gt Ca^(2+) gt K^(+)` `K^(+) gt Ca^(2+) gt Cl^(-) gt S^(2-) gt P^(3-)` `P^(3-) gt S^(2-) gt Cl^(-) gt K^(+) gt Ca^(2+)` SOLUTION :`P^(3-) gt S^(2-) gt Cl^(-) gt K^(+) gt Ca^(2+)` All have same (18) ELECTRONS, but nuclear charge INCREASE as a result order of IONIC radii decrease.

Discussion