Strontium Bohr Model

The bohr model of strontium contains a nucleus having 38 protons and 50 neutrons in the center, and around this nucleus, there are five electron shells containing 38 electrons.

Steps

Here’s how you can draw the bohr model of strontium step by step.

Step #1: write protons, neutrons, and electrons of strontium atom
Step #2: draw nucleus of strontium atom
Step #3: draw 1^st electron shell
Step #4: draw 2^nd electron shell
Step #5: draw 3^rd electron shell
Step #6: draw 4^th electron shell
Step #7: draw 5^th electron shell

Let’s break down each step in detail.

#1 Write Protons, Neutrons, and Electrons of Strontium Atom

Strontium has 38 protons, 50 neutrons, and 38 electrons.

Learn how to find: Strontium Protons Neutrons Electrons

#2 Draw Nucleus of Strontium Atom

The nucleus of a strontium atom contains 38 protons and 50 neutrons. So draw the nucleus of strontium atom as follows:

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

#3 Draw 1^st Electron Shell

Remember that we have a total of 38 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 38 – 2 = 36 electrons left. So in the next step, we have to draw the 2^nd electron shell.

#4 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 38 – 10 = 28 electrons left. So in the next step, we have to draw the 3^rd electron shell.

#5 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 38 – 28 = 10 electrons left. So in the next step, we have to draw the 4^th electron shell.

#6 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 8 electrons.

The 4^th electron shell contains only 4s and 4p subshells, and not 4d and 4f subshells. This is because according to the aufbau principle, the 5s subshell is filled first and then 4d, 5p, 6s… and so on.

Now we have already used 36 electrons in 1^st, 2^nd, 3^rd, and 4^th electron shells, so we have 38 – 36 = 2 electrons left. So in the next step, we have to draw the 5^th electron shell.

#7 Draw 5^th Electron Shell

The 5^th electron shell can hold up to a maximum of 50 electrons. So draw the 5^th electron shell as follows:

In the above image, 5 represents the 5^th electron shell that contains 5s subshell. And the green color represents the number of electrons in that subshell. This means that the 5^th electron shell has a total of 2 electrons.

That’s it! This is the final bohr model of strontium atom as we have used all 38 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, 8 electrons in the 4^th electron shell, and 2 electrons in the 5^th electron shell.

Next: Cesium Bohr Model

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Related:

• Periodic Table

Also Read:

• Strontium Element
• Strontium Electron Configuration
• Strontium Orbital Diagram
• Strontium Protons Neutrons and Electrons
• Strontium Valence Electrons

External Links:

• https://commons.wikimedia.org/wiki/File:38_strontium_(Sr)_enhanced_Bohr_model.png
• https://topblogtenz.com/bohr-model-for-strontium/