# Dysprosium Bohr Model

The bohr model of dysprosium contains a nucleus having 66 protons and 96 neutrons in the center, and around this nucleus, there are six electron shells containing 66 electrons.

## Steps

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

Step #1: find protons, neutrons, and electrons of dysprosium atom
Step #2: draw nucleus of dysprosium atom
Step #3: draw 1st electron shell
Step #4: draw 2nd electron shell
Step #5: draw 3rd electron shell
Step #6: draw 4th electron shell
Step #7: draw 5th electron shell
Step #8: draw 6th electron shell

Let’s break down each step in detail.

### #1 Find Protons, Neutrons, and Electrons of Dysprosium Atom

Dysprosium has 66 protons, 96 neutrons, and 66 electrons.

#### Dysprosium Protons

• Protons = atomic number

From the periodic table, find the atomic number of dysprosium.

The atomic number of dysprosium is 66. Hence, dysprosium has a total of 66 protons.

#### Dysprosium Neutrons

• Neutrons = atomic mass – atomic number

The atomic mass of dysprosium is 162.5, so we’ll take the roundup value as 162. And the atomic number of dysprosium is 66.

Subtract the atomic number (66) from the atomic mass (162). Hence, dysprosium has a total of 162 – 66 = 96 neutrons.

#### Dysprosium Electrons

• Electrons = atomic number

The atomic number of dysprosium is 66. Hence, dysprosium has a total of 66 electrons.

### #2 Draw Nucleus of Dysprosium Atom

The nucleus of a dysprosium atom contains 66 protons and 96 neutrons. So draw the nucleus of dysprosium atom as follows:

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

### #3 Draw 1st Electron Shell

Remember that we have a total of 66 electrons.

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

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

Since we have already used 2 electrons in the 1st electron shell, now we have 66 – 2 = 64 electrons left. So in the next step, we have to draw the 2nd electron shell.

### #4 Draw 2nd Electron Shell

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

In the above image, 2 represents the 2nd 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 2nd electron shell has a total of 8 electrons.

Now we have already used 10 electrons in 1st and 2nd electron shells, so we have 66 – 10 = 56 electrons left. So in the next step, we have to draw the 3rd electron shell.

### #5 Draw 3rd Electron Shell

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

In the above image, 3 represents the 3rd 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 3rd electron shell has a total of 18 electrons.

Now we have already used 28 electrons in 1st, 2nd, and 3rd electron shells, so we have 66 – 28 = 38 electrons left. So in the next step, we have to draw the 4th electron shell.

### #6 Draw 4th Electron Shell

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

In the above image, 4 represents the 4th electron shell that contains 4s, 4p, 4d, and 4f subshells. And the green, orange, pink, and blue color represents the number of electrons in that subshell. This means that the 4th electron shell has a total of 28 electrons.

In the 4th electron shell, the 4f subshell has only ten electrons. 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 56 electrons in 1st, 2nd, 3rd, and 4th electron shells, so we have 66 – 56 = 10 electrons left. So in the next step, we have to draw the 5th electron shell.

Still have a question: Why does the 4f subshell have only ten electrons?

Let’s draw the orbital diagram of dysprosium, and find the answer to the above question.

Answer: Once the 6s subshell is completely filled, then only we can mark electrons in the 4f subshell. That’s why in the 4th electron shell, the 4f subshell has only ten electrons.

### #7 Draw 5th Electron Shell

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

In the above image, 5 represents the 5th electron shell that contains 5s and 5p subshells. And the green and orange color represents the number of electrons in that subshell. This means that the 5th electron shell has a total of 8 electrons.

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

Now we have already used 64 electrons in 1st, 2nd, 3rd, 4th, and 5th electron shells, so we have 66 – 64 = 2 electrons left. So in the next step, we have to draw the 6th electron shell.

### #7 Draw 6th Electron Shell

The 6th electron shell can hold up to a maximum of 72 electrons. So draw the 6th electron shell as follows:

In the above image, 6 represents the 6th electron shell that contains 6s subshell. And the green color represents the number of electrons in that subshell. This means that the 6th electron shell has a total of 2 electrons.

That’s it! This is the final bohr model of dysprosium atom as we have used all 66 electrons: 2 electrons in the 1st electron shell, 8 electrons in the 2nd electron shell, 18 electrons in the 3rd electron shell, 28 electrons in the 4th electron shell, 8 electrons in the 5th electron shell, and 2 electrons in the 6th electron shell.

Next: Plutonium Bohr Model

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