Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 16, 2023

To determine the frequency of the electromagnetic wave released or absorbed at the transition of an electron in an atom, use the free Bohr's Model Calculator. It uses the electron's beginning and final energy levels to generate the frequency in a shorter amount of time.

Final Enery level of Electron E1
Initial Enery level of Electron E2

What is Bohr Model?

The atom is defined by Bohr's concept as a small, positively charged nucleus surrounded by electrons that orbit the nucleus in circular orbits, comparable to the solar system's structure. Neil Bohr first proposed it in 1915. The four major principles of the Bohr model are as follows

  • The orbiting electron's angular momentum is quantized.
  • The electron surrounds the nucleus in a circular orbit.
  • It is possible for an electron to orbit without losing energy due to radiation.
  • When an electron emits or absorbs a photon, it jumps between distinct energy levels.

Bohr Model Equation

The frequency of emitted or absorbed by the electron is determined by the Bohr model's link between frequency and energy. The equation for the Bohr model can be found here.

ΔE = E2 - E1 = h x f

  • E1 = initial energy level of the electron
  • E2 = final energy level of the electron
  • ΔE = difference of those energies
  • f = frequency of the absorbed or emitted electromagnetic wave
  • h = Planck's constant and its value is 6.6261 x 10-34 Js.

How do you Calculate the Bohr Model?

These are the manual steps for computing the frequency of electromagnetic waves using Bohr's model. To acquire the desired result, follow these guidelines.

  • Step 1: Let's look at the electron's initial and final energy levels.
  • Step 2: Subtract the final energy level from the initial energy level to get the final energy level.
  • Step 3: Divide the result from the Planck constant.

Hydrogen Like Atoms

The Bohr model is a simple model that accurately explains atoms with only one electron orbiting the nucleus (hydrogen-like atoms). The lowest energy orbit in the hydrogen atom has a value of -13.6 eV, whereas the second-lowest has a value of -3.4 eV. Our Hydrogen Energy Levels Calculator can help you to find it out. The energy difference between the orbits is E = 10.2, which equates to a frequency of f = 2466.3 THz, or 2.5 * 10(15) Hz, which is incredible!

  • The formula for calculating friction force F = μ X N, where N is the normal force in Newton’s.
  • μ is the coefficient of friction.
  • The friction force F is measured in Newtons.
  • In the formula above, change the values of μ and N.
  • To obtain the result, do a multiplication procedure.

Limitations of the Bohr Model of the Hydrogen Atom

  • Bohr's model does not function well for complicated atoms.
  • It was unable to explain why some spectral lines are brighter than others.
  • It couldn't explain why, in the presence of a magnetic field, some spectral lines were divided into several lines.

Bohr Model Examples

Question 1: The initial energy level of an electron in an atom is 30 eV, while the ultimate energy level is 42 eV. How do you determine the frequency of an electromagnetic wave?



Initial energy level E1 = 30 eV

Final energy level E2 = 42 eV

Bohr's model equation is E2 - E1 = h x f

f = (E2 - E1)/h

f = (42 - 30)/6.6261 x 10^-34

= 1.81 x 10^-34

Hence, the frequency is 1.81 x 10^-34 THz.

For more concepts check out to get quick answers by using this free tool.

FAQs on Bohr's Model Calculator

1. What is the Hydrogen Bohr Model?

The atomic Hydrogen concept was developed by Niels Bohr in 1913. It's a positively charged nucleus with protons and neutrons surrounded by a negatively charged electron cloud, according to him. The atom is held together by electrostatic interactions between the positive nucleus and the negative surroundings.

2. How do you use Bohr's model to compute the frequency of electromagnetic waves?

To determine Bohr's model frequency, simply take the energy difference between the electrons and divide it by Planck's constant.

3. What are the disadvantages of Bohr's Atom Model?

The following are the disadvantages of Bohr's model area

  • It fails to explain the Zeeman effect and the effect of the electric field on the atoms' spectrum.
  • It's unable to account for the spectra acquired from bigger atoms.
  • The Heisenberg Uncertainty Principle is broken.


4. What are the 4 principles of Bohr's Model?

The Bohr model's four main principles are that electrons occupy only specific orbits around the nucleus. Stationary orbits are what they're called. When an electron jumps from a higher to a lower order, energy is emitted, and when it jumps from a lower to a higher orbit, energy is absorbed. Every orbit has a certain amount of energy attached to it. The difference in orbital energies can be used to compute the quantity of energy absorbed or emitted.