Periodic Table How to Draw Bohr Diagrams

1. Periodic Table How to Draw Bohr Diagrams www.middleschoolscience.com 2008

2. Bohr Diagrams • Find your ______on the periodic table. • Determine the ______of ______– it is the _____as the atomic ______. • This is how ______electrons you will draw.

3. Bohr Diagrams • Find out which period (___) your element is in. • Elements in the ___ period have ___energy level. • Elements in the ___period have ___energy levels, and so on. www.chem4kids.com

4. Bohr Diagrams • Draw a _____with the element _____inside. • Carbon is in the ___period, so it has ___energy levels, or _____. • _____the shells around the nucleus. C

5. Bohr Diagrams • Add the _______. • Carbon has ___electrons. • The first shell can only hold ___electrons. C

6. Bohr Diagrams • Since you have 2 electrons ______drawn, you need to add ___more. • These go in the ___shell. • Add ___at a time -starting on the _____side and going _______clock-wise. C

7. Bohr Diagrams • Check your work. • You should have ___total electrons for Carbon. • Only ___electrons can fit in the ___shell. • The ___shell can hold up to ___electrons. • The ___shell can hold ___, but the elements in the first few periods only use 8 electrons. C

8. Bohr Diagrams Try the following elements on your own: • H • He • O • Al • Ne • K C

9. Bohr Diagrams Try the following elements on your own: • H – 1 electron • He • O • Al • Ne • K H

10. Bohr Diagrams Try the following elements on your own: • H • He - 2 electrons • O • Al • Ne • K He

11. Bohr Diagrams Try the following elements on your own: • H • He • O - 8 electrons • Al • Ne • K O

12. Bohr Diagrams Try the following elements on your own: • H • He • O • Al - 13 electrons • Ne • K Al

13. Bohr Diagrams Try the following elements on your own: • H • He • O • Al • Ne - 10 electrons • K Ne

14. Bohr Diagrams Try the following elements on your own: • H • He • O • Al • Ne • K - 19 electrons K

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