Question

The radius of hydrogen in the ground state is 0.53 $A^{\circ }$. The radius of $L{i}^{2+}$ in ground state will be:

• A. $1.06A^{\circ }$
• B. $0.265A^{\circ }$
• C. $0.17A^{\circ }$
• D. $0.53A^{\circ }$

Answer 1

The correct option is C $0.17A^{\circ }$

$r\propto \frac{n^2}{z}\therefore r_{Li}=\frac{r_H}{3}=0.17A^{\circ }$