1. Making Bohr Models
These models show where the protons, neutrons, and electrons are located

2. Getting Started
Bohr models show where the protons electrons and neutrons are found
Find the number of protons, neutrons, and electrons using the atomic number and atomic mass

3. Making the Nucleus of Model
Write the protons and neutrons in the center of the model (nucleus)
Abbreviate the protons with ‘P’ and the neutrons with ‘N’
17 P
18 N

4. Making the Electron Orbitals
Place the appropriate number of electrons in each orbital according to the following rules:
1st – 2 total can fit
2nd – 8 total can fit
3rd – 18 total can fit
17 P
18 N

5. The Last Ring
The last ring that you fill with electrons is called the valence shell
The electrons in the valence shell are called valence electrons
Valence electrons are very important when atoms combine to make compounds

6. Check Your Models!
Make sure the number of protons and electrons are equal!
Make sure you filled each orbital before moving on to the next!