Helium Bohr model

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Helium Bohr model
Helium Bohr model | Image: Learnool

In the helium Bohr model, the nucleus is central, housing 2 protons and 2 neutrons. Orbiting this nucleus is a single electron shell, accommodating 2 electrons.

To draw the Bohr model of helium, note the 2 protons, 2 neutrons, and 2 electrons. Start by illustrating the nucleus, and then depict the first electron shell.

Steps

Write protons, neutrons, and electrons of helium atom

Helium has 2 protons, 2 neutrons, and 2 electrons.

Draw nucleus of helium atom

The nucleus of a helium atom contains 2 protons and 2 neutrons. So draw the nucleus of helium atom as follows:

Helium nucleus
Helium nucleus | Image: Learnool

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

Draw 1st electron shell

Remember that we have a total of 2 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:

Helium shell 1
Helium 1st electron shell drawn | Image: Learnool

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.

That’s it! This is the final Bohr model of helium atom as we have only 2 electrons and that are marked in the 1st electron shell.

Next: Lithium Bohr model

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Learnool.com was founded by Deep Rana, who is a mechanical engineer by profession and a blogger by passion. He has a good conceptual knowledge on different educational topics and he provides the same on this website. He loves to learn something new everyday and believes that the best utilization of free time is developing a new skill.

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