Question

If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is

• A. 10.2 eV
• B. 0 eV
• C. 3.4 eV
• D. 6.8 eV

Answer 1

The correct option is C

3.4 eV

$E_n=\frac{-13.6}{n^2}eVn=2\therefore E_2=\frac{-13.6}{4}=-3.4eV$