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

2. Bohr Diagrams 1) Find your ______on the periodic table. 2) Determine the ______of ______– it is the _____as the atomic ______. 3) 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 1) Draw a _____with the element _____inside. 2) Carbon is in the ___period, so it has ___energy levels, or _____. 3) _____the shells around the nucleus. C C

5. Bohr Diagrams 1) Add the _______. 2) Carbon has ___electrons. 3) The first shell can only hold ___electrons. C C

6. Bohr Diagrams 1) Since you have 2 electrons ______drawn, you need to add ___more. 2) These go in the ___shell. 3) Add ___at a time -starting on the _____side and going _______clock-wise. C C

7. Bohr Diagrams 1) Check your work. 2) You should have ___total electrons for Carbon. 3) Only ___electrons can fit in the ___shell. 4) The ___shell can hold up to ___electrons. 5) The ___shell can hold ___, but the elements in the first few periods only use 8 electrons. C C

8. Bohr Diagrams Try the following elements on your own: a) H b) He c) O d) Al e) Ne f) K C C

9. Bohr Diagrams Try the following elements on your own: a) H – 1 electron b) He c) O d) Al e) Ne f) K H H

10. Bohr Diagrams Try the following elements on your own: a) H b) He - 2 electrons c) O d) Al e) Ne f) K He

11. Bohr Diagrams Try the following elements on your own: a) H b) He c) O - 8 electrons d) Al e) Ne f) K O O

12. Bohr Diagrams Try the following elements on your own: a) H b) He c) O d) Al - 13 electrons e) Ne f) K Al

13. Bohr Diagrams Try the following elements on your own: a) H b) He c) O d) Al e) Ne - 10 electrons f) K Ne

14. Bohr Diagrams Try the following elements on your own: a) H b) He c) O d) Al e) Ne f) K - 19 electrons K K

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