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Periodic Table Study Guide. How to Draw Bohr Diagrams. Bohr Diagrams. Find your element on the periodic table. Determine the number of electrons – it is the same as the atomic number. This is how many electrons you will draw. Bohr Diagrams. Find out which period (row) your element is in.

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Periodic Table Study Guide

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Periodic table study guide

Periodic Table Study Guide

How to Draw Bohr Diagrams


Bohr diagrams

Bohr Diagrams

  • Find your element on the periodic table.

  • Determine the number of electrons – it is the same as the atomic number.

  • This is how many electrons you will draw.


Bohr diagrams1

Bohr Diagrams

  • Find out which period (row) your element is in.

  • Elements in the 1st period have one energy level.

  • Elements in the 2nd period have two energy levels, and so on.

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Bohr diagrams2

Bohr Diagrams

  • Draw a nucleus with the element symbol inside.

  • Carbon is in the 2nd period, so it has two energy levels, or shells.

  • Draw the shells around the nucleus.

C


Bohr diagrams3

Bohr Diagrams

  • Add the electrons.

  • Carbon has 6 electrons.

  • The first shell can only hold 2 electrons.

C


Bohr diagrams4

Bohr Diagrams

  • Since you have 2 electrons already drawn, you need to add 4 more.

  • These go in the 2nd shell.

  • Add one at a time -starting on the right side and going counter clock-wise.

C


Bohr diagrams5

Bohr Diagrams

  • Check your work.

  • You should have 6 total electrons for Carbon.

  • Only two electrons can fit in the 1st shell.

  • The 2nd shell can hold up to 8 electrons.

  • The 3rd shell can hold 18, but the elements in the first few periods only use 8 electrons.

C


Bohr diagrams6

Bohr Diagrams

Try the following elements on your own:

  • H

  • He

  • O

  • Al

  • Ne

  • K

C


Bohr diagrams7

Bohr Diagrams

Try the following elements on your own:

  • H – 1 electron

  • He

  • O

  • Al

  • Ne

  • K

H


Bohr diagrams8

Bohr Diagrams

Try the following elements on your own:

  • H

  • He - 2 electrons

  • O

  • Al

  • Ne

  • K

He


Bohr diagrams9

Bohr Diagrams

Try the following elements on your own:

  • H

  • He

  • O - 8 electrons

  • Al

  • Ne

  • K

O


Bohr diagrams10

Bohr Diagrams

Try the following elements on your own:

  • H

  • He

  • O

  • Al - 13 electrons

  • Ne

  • K

Al


Bohr diagrams11

Bohr Diagrams

Try the following elements on your own:

  • H

  • He

  • O

  • Al

  • Ne - 10 electrons

  • K

Ne


Bohr diagrams12

Bohr Diagrams

Try the following elements on your own:

  • H

  • He

  • O

  • Al

  • Ne

  • K - 19 electrons

K


Bohr diagrams13

Bohr Diagrams

End of Study Guide.

You should know how to draw a Bohr Diagram for the first 20 elements.


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