Name
Period
Date
Worksheet 1 - Atomic Models - Bohr Diagrams
Using the periodic table, draw Bohr diagrams for each atom. Write in the number of protons and
neutrons in the nucleus and draw electrons on the appropriate energy levels (remembering the filling
rules – 2, 8, 8, etc). Identify the energy level as well as the number of valence electrons.
1. He –
Electron Level:
Number of Valence Electrons:
3. Ar –
2. Na –
Electron Level:
Number of Valence Electrons:
4. H –
Electron Level:
Number of Valence Electrons:
Electron Level:
Number of Valence Electrons:
5. F –
6. Li –
Electron Level:
Number of Valence Electrons:
Electron Level:
Number of Valence Electrons:
What pattern do you notice about hydrogen, lithium, and sodium?
1. Ne –
2. F- –
Electron Level:
Number of Valence Electrons:
3. O2- –
Electron Level:
Number of Valence Electrons:
Electron Level:
Number of Valence Electrons:
Electron Level:
Number of Valence Electrons:
5. Mg2+ –
6.Al3+ –
Electron Level:
Number of Valence Electrons:
Electron Level:
Number of Valence Electrons:
4. Na+ –
What pattern do you notice about the atom and ions on this page?