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Mastering the Bohr Model: A Step-by-Step Guide to Atomic Structure

Bohr Model for Elements of the Periodic Table and the Structure of Tellurium

As scientists began to delve deeper into the mysteries of the atomic structure, numerous theories emerged to explain how atoms were organized and what they were made of. One such theory was the Bohr Model, which was introduced by Danish physicist Niels Bohr in 1913.

The Bohr Model not only sought to explain the arrangement of electrons within an atom, but also provided insights into how matter is Bohr Model

The Bohr Model is a simplified representation of an atom that shows the electrons orbiting the nucleus in distinct energy levels called electron shells. Electrons can only occupy certain shells, and they move between shells by absorbing or emitting energy.

Bohr’s model was a marked improvement over previous atomic models because it could explain the stability of the Atom. Prior to the Bohr Model, scientists had ridiculed the idea of atoms of having fixed energy levels, because it went against everything they thought they knew about the laws of physics.

However, Bohr’s theory could also explain the arrangement of the Periodic Table and how that structure is linked to chemical properties.

Examples of Bohr Model for Elements of the Periodic Table

Bohr’s model has been applied to all the elements of the periodic table, displaying the electron shells/energy levels as basic classifications. Group 1 elements have one valence or outer electron which occupies the first shell.

Group 2 elements have two valence electrons which occupy the first two shells, and so on. Hydrogen, which has one electron and one proton, has the same number of electrons in its first shell (K) as hydrogen, which has two electrons, sulfur, which has 16, and calcium, which has 20, have in their second shells (L).

Elements such as Cr (24), Mo (42), and Ag (47) have the addition of a third outer shell (M).

While this model is useful in its simplicity, it is not perfectly accurate.

For example, the model fails to explain the electron “spin” and the Repulsion of electrons within the same shell. Despite these limitations, the Bohr Model still provides an accurate general understanding of atomic structure.

Tellurium Bohr Model

To better understand how the Bohr model applies to atomic structure, it is helpful to examine the Bohr model for Tellurium, which has the atomic number 52. Structure of

Tellurium Bohr Model

The nucleus of tellurium contains 52 particles: 52-Te 52 protons and approximately 76 neutrons depending on the isotope.

The electrons in tellurium occupy four energy levels, although there are actually six possible energy levels, each with a different number of electrons per shell. Tellurium’s electron configuration is [Kr] 4d10 5s2 5p4, which means that it has 2 electrons in the s orbital of the fifth energy level, 10 electrons in the d orbital of the fourth energy level, and 4 electrons in the p orbital of the fifth energy level.

Electron Distribution in

Tellurium Bohr Model

According to Bohr’s theory, the valence electrons are the ones in the outermost energy level. In the Tellurium Bohr model, the valence electrons are those in the p suborbital of the fifth energy level.

These electrons are the ones involved in chemical bonding and reactions. Therefore Tellurium has 4 out of a maximum of 6 electrons in the p suborbital of its fifth energy level.


In conclusion, the Bohr Model is a simplified, yet effective way to visualize the structure of the atomic particles. By layering the electrons into shells, the model provides a basic understanding of how the electrons move within the atom and the different energy levels available.

Additionally, examining the Bohr model for Tellurium provides a great way to show the various components of the atom and how they work Drawing Bohr Model

The Bohr Model is a widely recognized and accepted depiction of the atomic structure. The model provides a basic understanding of how electrons move and are arranged at different energy levels.

To better comprehend the Bohr Model, it is important to understand how to draw one. In this article, we will elaborate on the steps required to draw a Bohr Model accurately and efficiently.

Steps To Draw Bohr Model

1. Determine the Atomic Number

The first step in drawing a Bohr Model is to identify the element you want to model and determine its atomic number.

The atomic number refers to the number of protons present in the nucleus of an atom. For example, if we were drawing a Bohr Model for oxygen, we would need to know that its atomic number is 8.

2. Determine the number of Electrons in the Atom

After identifying the atomic number of the element, the second step is to determine the number of electrons that are present in the atom.

This number is the same as the atomic number, and it represents the total number of electrons an atom contains. However, not all electrons are present at the outermost shell or energy level.

So, the next step is to distribute the electrons across the available energy levels. 3.

Distribute Electrons into Energy Levels

To distribute the electrons, it is important to understand that atoms prefer to have complete electron shells. The first energy level (K) can hold up to two electrons, whereas the other energy levels (L, M, N, and so on) can hold up to eight electrons.

Begin by filling the first energy level with the requisite number of electrons present in the atom. 4.

Filling Subsequent Energy Levels

Once the electrons are distributed in the first energy level, fill up the remaining energy levels in ascending order. In general, the second energy level is filled with a maximum of 8 electrons while the third energy level has a maximum of 18 electrons.

If there are any remaining electrons after filling the third energy level, then they will occupy the fourth energy level (as is the case for oxygen). If there are any electrons leftover, they will fill any subsequent energy levels.

5. Place Electrons in Subshells

Each energy level has sub-shells or orbital spaces which electrons fill before moving onto the next.

There are s, p, d, and f subshells (or orbitals) which can be said to occupy the energy levels. The s orbital is spherical while the p, d and f orbitals have various shapes.

These subshells have a maximum capacity to harbor electrons which depends on their shape. S subshells can always host up to two electrons, p subshells have three orbitals that can hold a total of up to 6 electrons, the d subshells have five orbitals that can hold a maximum of ten electrons, and the f subshells have seven orbitals that can hold a maximum of fourteen electrons.

Ensure that you place electrons in the subshells in accordance with the energy levels.


Label Each Energy Level

Label each energy level with its corresponding letter, starting from the K shell onwards to the higher energy levels as they are filled. For instance, label energy level one as K, energy level two as L, energy level three as M, and any subsequent energy levels as N, O, and so forth.

7. Double-Check the Bohr Model

The final step is to double-check the model to ensure that it matches the atomic number and to ensure that the electrons are placed in the correct number of energy levels and their subshells.

Ensure that each subshell of each energy level is filled according to its maximum electron allowance. If youre satisfied that the model is correct, then your drawing will be complete.


In conclusion, drawing a Bohr Model requires a clear understanding of the steps involved in creating the model. In this article, we have outlined those steps to help you create a complete and accurate model for any element on the periodic table.

All you need is a little bit of time and effort to understand the concept and apply it correctly, and you can effortlessly create a unique Bohr Model for any given element. Drawing a Bohr Model is an essential aspect of understanding the atomic structure of an element.

The six key steps involved in creating an accurate Bohr Model are determining the atomic number, determining the number of electrons in the atom, distributing electrons into energy levels, filling the subsequent energy levels, placing electrons in subshells, and labelling each energy level. By following these steps, users can create an accurate depiction of any element’s atomic structure, allowing them to better understand the properties of the element.

Finally, drawing the Bohr Model plays a critical role in the classification of elements on the periodic table and provides an essential foundation for further study of the atom. FAQs:

Q: What is a Bohr Model?

A: The Bohr Model is a simplified diagram used to depict the atomic structure of an element. Q: What information is required to draw a Bohr Model?

A: Identifying the atomic number of an element and the number of electrons it contains is necessary to draw a Bohr Model. Q: How are electrons distributed in an atom when drawing a Bohr model?

A: Electrons are placed in available energy levels starting with the first energy shell and then moving to higher levels. Q: What are subshells in an atom?

A: Subshells, also called orbitals, are spaces located within each corresponding energy level which electrons occupy before moving to the next subshell.

Q: Why is drawing a Bohr Model important?

A: Drawing a Bohr Model provides a clear understanding of the arrangement of electrons in an element, which plays a central role in the classification of elements on the periodic table and the study of chemical reactions.

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