**Energy Level Diagram For Hydrogen Atom-**

Before you go through this article, make sure that you have gone through the previous article on **Bohr’s Atomic Model**.

**We have learnt that-**

- Electrons revolve around the nucleus in fixed energy orbits called as
**stationary states**. - When an electron makes a transition from any higher energy level to a lower energy level, the difference of energy appears in the form of a photon.
- This results in the emission of line spectrum.
- The origin of various spectral series in the hydrogen atom are also discussed.

**In this article, we will discuss about energy level diagram for hydrogen atom.**

**Energy Level Diagram-**

Energy level diagram is a diagram in which the energies of the different stationary states of an atom are represented by parallel horizontal lines drawn according to some suitable energy scale. |

Energy level diagram illustrates more clearly the known facts about the stationary states and the emission or absorption of various **spectral lines**.

From Bohr’s theory, the **energy of an electron** in the n^{th} Bohr orbit of an atom is given by-

**For hydrogen atom (Z=1),**

- The total energy of electron in 1
^{st}Bohr orbit is**E**_{1}= -13.6/1^{2}= -13.6 eV - The total energy of electron in 2
^{nd}Bohr orbit is**E**_{2}= -13.6/2^{2}= -3.4 eV - The total energy of electron in 3
^{rd}Bohr orbit is**E**_{3}= -13.6/3^{2}= -1.51 eV - The total energy of electron in 4
^{th}Bohr orbit is**E**_{4}= -13.6/4^{2}= -0.85 eV - The total energy of electron in 5
^{th}Bohr orbit is**E**_{5}= -13.6/5^{2}= -0.54 eV

**Now, the energy level diagram for hydrogen atom may be drawn as-**

**Read the next article on-**

**Limitations of Bohr’s Atomic Model**

**Get more notes & other study material of the Chapter** **Atoms**.