Question

Using Bohr’s formula for energy quantization, the ionisation potential of the ground state of $L{i}^{++}$ atoms is

• A. 122 V
• B. 13.6 V
• C. 3.4 V
• D. 10.2 V

Answer 1

Answer: (A)

Energy in a shell of an atom is given by
$E=E_0\frac{Z^2}{n^2}$
$E_L=13.6\times 9$
or $\approx 122V$