Lithium Bohr model

The Bohr model of lithium shows a central nucleus made up of 3 protons and 4 neutrons.^[1][2][3][4] This nucleus forms the dense core of the atom. Surrounding it are two electron shells arranged in concentric circles. Lithium has 3 electrons in total, and these are distributed according to energy levels—2 electrons fill the first shell (K shell), and the remaining 1 electron occupies the second shell (L shell).

To draw the Bohr model of lithium, start by sketching the nucleus at the center, clearly indicating the presence of 3 protons and 4 neutrons. Then, draw two circular shells around the nucleus. Place 2 electrons on the inner shell (K shell) and 1 electron on the outer shell (L shell). This arrangement completes the model and reflects lithium’s electron configuration accurately.

Steps

Write protons, neutrons, and electrons of lithium atom

Lithium has 3 protons, 4 neutrons, and 3 electrons.

Learn how to find: Lithium protons neutrons electrons

Draw nucleus of lithium atom

The nucleus of a lithium atom contains 3 protons and 4 neutrons. So draw the nucleus of lithium 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 3 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 3 – 2 = 1 electron 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 subshell. And the green color represents the number of electrons in that subshell. This means that the 2^nd electron shell has a total of 1 electron.

That’s it! This is the final Bohr model of lithium atom as we have used all 3 electrons: 2 electrons in the 1^st electron shell and 1 electron in the 2^nd electron shell.

Next: Beryllium Bohr model

Related

• Lithium

More topics

• Lithium orbital diagram
• Lithium protons neutrons electrons
• Lithium valence electrons

References