The radus of hydrogen atom in the ground state `0.53 Ã…`. The radius of `Li^(2+)` ion (Atomic number = 3) in a similar state is

Options

A. `1.06 Å`
B. `0.265 Å`
C. `0.17 Å`
D. `0.53 Å`

Answer

C

Explanation

`r_(Li^(2+)) = (0.53)/(2) = (0.53)/(3) ~~ 0.17 Å`.