Taking the Bohr radius `a_(0) = 53` pm, the radius of `Li^(++)` ion in its gnround state, on the basis of Bohr's model, will be about.

Options

A. 53 pm
B. 27 pm
C. 18 pm
D. 13 pm

Answer

C

Explanation

The atomic number of lithium is 3 , therefore, the radius of `Li^(+ + )` ion in its ground state, on the basis of Bohr’s model, will be about `(1)/(3)` times to that of Bohr radius. Therefore, the radius of lithium ion is near 53/3 `~~` 18pm