Identify the correct order of the size of the following

Options

A. `Ca^(2+) lt K^(+) lt Ar lt S^(2-) lt Cl^(-)`
B. `Ca^(2+) lt K^(+) lt Ar lt Cl^(-) lt S^(2-)`
C. `Ar lt Ca^(2+) lt K^(+) lt Cl^(-) lt S^(2-)`
D. `Ca^(2+) lt Ar lt K^(+) lt Cl^(-) lt S^(2-)`

Answer

B

Explanation

In isoelectronic species radius decreases on increasing effective nuclear charge.