Question

The ionisation potential of hydrogen atom is 13.6 volt. The energy required to remove an electron in the n = 2 state of the hydrogen atom is.

• A. 27.2 eV
• B. 13.6 eV
• C. 6.8 eV
• D. 3.4 eV

Answer 1

Answer: (D)

3.4 eV

Answer 2

Energy required to remove electron in the n = 2 state$= + \frac{13.6}{(2)^{2}} = + 3.4eV$