Bromine Bohr model

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The bromine Bohr model has a nucleus with 35 protons and 45 neutrons. Surrounding this nucleus are four electron shells, holding a total of 35 electrons.

To draw the bromine Bohr model, represent the 35 protons, 45 neutrons, and 35 electrons. Begin by sketching the nucleus, and then draw the four electron shells. The first three shells should contain 2, 8, and 18 electrons, respectively, while the fourth shell holds the remaining 7 electrons.

Steps

Write protons, neutrons, and electrons of bromine atom

Bromine has 35 protons, 45 neutrons, and 35 electrons.

Learn how to find: Bromine protons neutrons electrons

Draw nucleus of bromine atom

The nucleus of a bromine atom contains 35 protons and 45 neutrons. So draw the nucleus of bromine 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 35 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 35 – 2 = 33 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 35 – 10 = 25 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, 3p and 3d subshells. And the green, orange, and pink color represents the number of electrons in that subshell. This means that the 3^rd electron shell has a total of 18 electrons.

Now we have already used 28 electrons in 1^st, 2^nd, and 3^rd electron shells, so we have 35 – 28 = 7 electrons left. So in the next step, we have to draw the 4^th electron shell.

Draw 4^th electron shell

The 4^th electron shell (containing s subshell, p subshell, d subshell, and f subshell) can hold up to a maximum of 32 electrons. So draw the 4^th electron shell as follows:

In the above image, 4 represents the 4^th electron shell that contains 4s and 4p subshells. And the green and orange color represents the number of electrons in that subshell. This means that the 4^th electron shell has a total of 7 electrons.

That’s it! This is the final Bohr model of bromine atom as we have used all 35 electrons: 2 electrons in the 1^st electron shell, 8 electrons in the 2^nd electron shell, 18 electrons in the 3^rd electron shell, and 7 electrons in the 4^th electron shell.

Next: Krypton Bohr model

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Related

• Bromine

More topics

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

External links

• File:35 bromine (Br) enhanced Bohr model.png – Wikimedia Commons
• Chemical Elements.com – Bromine (Br) – Chemical Elements.com
• How to draw Bohr diagram for Bromine (Br) atom – Topblogtenz
• Bromine (Br) – Periodic Table – ChemicalAid
• What is Bromine’s Bohr Diagram? – Answers
• Bohr Diagrams of Atoms and Ions – Chemistry LibreTexts
• Sketch (on your answer sheet) the Bohr model for a neutral Bromine atom – Chegg
• Select the correct Bohr configuration for an excited state bromine (Br) – Numerade