Zirconium Bohr model

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In the zirconium Bohr model, the nucleus consists of 40 protons and 51 neutrons. Surrounding this nucleus are five electron shells, accommodating a total of 40 electrons.

To draw the zirconium Bohr model, represent the 40 protons, 51 neutrons, and 40 electrons. Begin by sketching the nucleus, and then draw the five electron shells. The first four shells should contain 2, 8, 18, and 10 electrons, respectively, while the fifth shell holds the remaining 2 electrons.

Steps

Write protons, neutrons, and electrons of zirconium atom

Zirconium has 40 protons, 51 neutrons, and 40 electrons.

Learn how to find: Zirconium protons neutrons electrons

Draw nucleus of zirconium atom

The nucleus of a zirconium atom contains 40 protons and 51 neutrons. So draw the nucleus of zirconium 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 40 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 40 – 2 = 38 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 40 – 10 = 30 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 40 – 28 = 12 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, 4p, and 4d subshells. And the green, orange, and pink color represents the number of electrons in that subshell. This means that the 4^th electron shell has a total of 10 electrons.

The 4^th electron shell contains only 4s, 4p, and 4d subshells, and not a 4f subshell. 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 38 electrons in 1^st, 2^nd, 3^rd, and 4^th electron shells, so we have 40 – 38 = 2 electrons left. So in the next step, we have to draw the 5^th electron shell.

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 zirconium atom as we have used all 40 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, 10 electrons in the 4^th electron shell, and 2 electrons in the 5^th electron shell.

Next: Molybdenum Bohr model

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Related

• Zirconium

More topics

• Zirconium electron configuration
• Zirconium orbital diagram
• Zirconium protons neutrons electrons

External links

• File:40 zirconium (Zr) enhanced Bohr model.png – Wikimedia Commons
• Chemical Elements.com – Zirconium (Zr) – Chemical Elements.com
• What is the Bohr model for Zirconium? – Topblogtenz
• Zirconium (Zr) – Periodic Table – ChemicalAid