Identify the correct order of innic radii of the following ions

Options

A. `Al^(3+) gt K^(+) gt Mg ^(2+) gt Li^(+)`
B. `K^(+) gt Mg ^(2+) gt Al ^(3+) gt Li ^(3+)`
C. `K^(+) Li ^(+) gt Mg ^(2+) gt Al^(3)`
D. `k ^(+) gt Mg ^(2) gt Li ^(+) gt Al ^(3+)`

Answer

C

Explanation

Nuclear charge depicts the ionic radii of metals. Tonic radii of netal ions decreases from alkali metal ion, alkaline earth metals and so on.
`therefore K ^(+) gt Li ^(+) gt Mg ^(2+) gt Al ^(3+)`