# What is Bohr Model? (See Bohr Diagrams of all 118 Elements)

What is a Bohr model?
Bohr model is a structural model in which the negatively charged electrons revolve around the positively charged nucleus. This is similar to the planets revolving around the sun, except that the orbits are non-planar.

The electrons move in a fixed orbits (shells) and each orbit has a fixed energy.
Each orbit (or shell) can hold a certain number of electrons.

Here is a simple table showing the number of electrons that can be accommodated in each shell.

Number of electrons in each shell;

Thus, 1st shell can hold 2 electrons, 2nd shell can hold 8 electrons, 3rd shell can hold 18 electrons, 4th shell can hold 32 electrons, and so on. [1]

## Bohr Model of All Elements

Bohr diagrams of all elements are shown in the table below.

## External resources:

1. Foundation, C. (n.d.). CK12-Foundation. CK12-Foundation. https://flexbooks.ck12.org/cbook/ck-12-middle-school-physical-science-flexbook-2.0/section/3.15/primary/lesson/bohrs-atomic-model-ms-ps/
2. Bohr Diagrams of Atoms and Ions. (2015, September 6). Chemistry LibreTexts. https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Electronic_Structure_of_Atoms_and_Molecules/Bohr_Diagrams_of_Atoms_and_Ions
3. Bohr model – Wikipedia. (2014, September 30). Bohr Model – Wikipedia. https://en.wikipedia.org/wiki/Bohr_model
4. The Bohr Model of the Atom. (n.d.). The Bohr Model of the Atom | NSTA. https://www.nsta.org/science-teacher/science-teacher-januaryfebruary-2021/bohr-model-atom
5. Bohr model. (n.d.). https://cpanhd.sitehost.iu.edu/C101webnotes/modern-atomic-theory/Bohr-model.html
6. Bohr model. (n.d.). https://www.pas.rochester.edu/~blackman/ast104/bohr.html
Author
##### Jay Rana

Jay is an educator and has helped more than 100,000 students in their studies by providing simple and easy explanations on different science-related topics. With a desire to make learning accessible for everyone, he founded Knords Learning, an online learning platform that provides students with easily understandable explanations.