An electron is in the ground state of a hydrogen atom. A photon is absorbed by the atom and the electron is excited to the n = 2 state. What is the energy in eV of the photon?
A)13.6 eV
B)10.2 eV
C)3.40 eV
D)1.51 eV
E)0.54 eV

Question

Quizplus · Accepted Answer

The energy difference between the ground state (n=1) and the n=2 state in a hydrogen atom is 10.2 eV. This is the energy of the photon required to excite the electron from n=1 to n=2.

An Electron Is in the Ground State of a Hydrogen