Argon Bohr model

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The argon Bohr model has a nucleus with 18 protons and 22 neutrons. Surrounding this nucleus are three electron shells, holding a total of 18 electrons.

To draw the argon Bohr model, represent the 18 protons, 22 neutrons, and 18 electrons. Start by illustrating the nucleus, and then draw the three electron shells. The first two shells should contain 2 and 8 electrons, respectively, while the third shell holds the remaining 8 electrons.

Steps

Write protons, neutrons, and electrons of argon atom

Argon has 18 protons, 22 neutrons, and 18 electrons.

Learn how to find: Argon protons neutrons electrons

Draw nucleus of argon atom

The nucleus of an argon atom contains 18 protons and 22 neutrons. So draw the nucleus of argon atom as follows:

Now in the next step, draw the 1^st electron shell and start marking electrons.

Draw 1^st electron shell

Remember that we have a total of 18 electrons.

The 1^st electron shell (containing s subshell) can hold up to a maximum of 2 electrons. So draw the 1^st electron shell as follows:

In the above image, 1 represents the 1^st electron shell that contains 1s subshell. And the green color represents the number of electrons in that subshell. This means that the 1^st electron shell has a total of 2 electrons.

Since we have already used 2 electrons in the 1^st electron shell, now we have 18 – 2 = 16 electrons left. So in the next step, we have to draw the 2^nd electron shell.

Draw 2^nd electron shell

The 2^nd electron shell (containing s subshell and p subshell) can hold up to a maximum of 8 electrons. So draw the 2^nd electron shell as follows:

In the above image, 2 represents the 2^nd electron shell that contains 2s and 2p subshells. And the green and orange color represents the number of electrons in that subshell. This means that the 2^nd electron shell has a total of 8 electrons.

Now we have already used 10 electrons in 1^st and 2^nd electron shells, so we have 18 – 10 = 8 electrons left. So in the next step, we have to draw the 3^rd electron shell.

Draw 3^rd electron shell

The 3^rd electron shell (containing s subshell, p subshell, and d subshell) can hold up to a maximum of 18 electrons. So draw the 3^rd electron shell as follows:

In the above image, 3 represents the 3^rd electron shell that contains 3s and 3p subshells. And the green and orange color represents the number of electrons in that subshell. This means that the 3^rd electron shell has a total of 8 electrons.

That’s it! This is the final Bohr model of argon atom as we have used all 18 electrons: 2 electrons in the 1^st electron shell, 8 electrons in the 2^nd electron shell, and 8 electrons in the 3^rd electron shell.

Next: Gallium Bohr model

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Related

• Argon

More topics

• Argon electron configuration
• Argon orbital diagram
• Argon protons neutrons electrons
• Argon valence electrons

External links

• File:18 argon (Ar) Bohr model.png – Wikimedia Commons
• Bohr Diagrams of Atoms and Ions – Chemistry LibreTexts
• Chemical Elements.com – Argon (Ar) – Chemical Elements.com
• How to draw Bohr diagram for Argon (Ar) atom – Topblogtenz
• Argon Bohr Model — Diagram, Steps To Draw – Techiescientist
• Argon (Ar) – Periodic Table – ChemicalAid
• Draw Bohr-Rutherford diagram for the argon-40 atom – Quizlet
• What is the Bohr model for argon? – Brainly