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 ______.

Options

• 10.2 eV

• 0 eV

• 3.4 eV

• 6.8 eV

Answer 1

If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is 3.4 eV.

Explanation:

The amount of energy necessary to remove the electron from hydrogen's n^th orbit is given by

E_n = `13.6/"n"^2` eV/atom

For n = 2, E_n = `13.6/4` = 3.4 eV

Since, the energy required to remove an electron from n = 2 is + 3.4 eV.