Beryllium Bohr model

The Bohr model of beryllium illustrates a central nucleus composed of 4 protons and 5 neutrons, forming the dense core of the atom.^[1][2][3] Surrounding this nucleus are two electron shells arranged in concentric circles. Beryllium has 4 electrons in total—2 are placed in the first energy level, the K shell, and the remaining 2 occupy the second level, the L shell. This distribution follows the principle of filling lower energy levels before higher ones.

To draw the Bohr model of beryllium, begin by sketching the nucleus in the center and marking 4 protons and 5 neutrons within it. Then, draw two surrounding shells: the inner K shell and the outer L shell. Place 2 electrons on the K shell and 2 electrons on the L shell. Label the shells to reflect their order moving outward from the nucleus. This completes the atomic structure of beryllium according to the Bohr model.

Steps

Write protons, neutrons, and electrons of beryllium atom

Beryllium has 4 protons, 5 neutrons, and 4 electrons.

Learn how to find: Beryllium protons neutrons electrons

Draw nucleus of beryllium atom

The nucleus of a beryllium atom contains 4 protons and 5 neutrons. So draw the nucleus of beryllium 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 4 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 4 – 2 = 2 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 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 4 electrons.

That’s it! This is the final Bohr model of beryllium atom as we have used all 4 electrons: 2 electrons in the 1^st electron shell and 2 electrons in the 2^nd electron shell.

Next: Sodium Bohr model

Related

• Beryllium

More topics

• Beryllium orbital diagram
• Beryllium protons neutrons electrons
• Beryllium valence electrons

References