Question

To which orbit the electron in the hydrogen atom will jump

Answer 1

The energy of ground state electron in Hydrogen atom is -13.6 eV. Now, it absorbs 12.1 eV energy and hence, its energy increases to -13.6 + 12.1 = -0.85 eV. For hydrogen, Z=1; Therefore, the electron jumps to 4 orbit on absorbing 12.1 eV energy.