1. Drawing Bohr Diagrams Lesson 3

3. Bohr and Quantum Periodic Table Label the s, p, d, and f orbitals. 1s

4. F 1 st Shell 2 2 nd Shell 7

5. 1. Draw the Bohr Diagram for the Element F 9 1- F Fluorine 19.0 Protons = 9 Atomic mass = 19 Neutrons = 19 - 9 = 10 7e - 2e - 9p 10n Why does F form an ion with a 1- charge? 7 valence electrons (outer)

6. Ca 1 st Shell 2 3 rd Shell 8 2 nd Shell 8 4 th 2 28822882

7. 2. Draw the Bohr Diagram for the Element Ca 20 2+ Ca Calcium 40.1 Protons = 20 Atomic mass = 40 Neutrons = 40 - 20 = 20 Why does Ca form an ion with a 2+ charge? 2 valence electrons (outer) 8e - 2e - 20p 20n 2e -

8. Kr Look at all of the shells that are full before Kr 1 st Shell 2 2 nd Shell 8 3 rd Shell 18 4 th Shell 8 2 8 18 8

9. 3. Draw the Bohr Diagram for the Element Kr 36 Kr Krypton 83.8 Protons = 36 Atomic mass = 84 Neutrons = 84 - 36 = 48 Does Kr form an ion? 8 valence electrons (outer) 18e - 8e - 2e - 36p 48n 8e -

10. I-I- Add 1 electron 1212 5858 418 318 2828

11. 4. Draw the Bohr Diagram for the Element I - 53 1- I Iodine 126.9 Protons = 53 Atomic mass = 127 Neutrons = 127 - 53 = 74 Why does I form a 1- ion? 8 valence electrons 18e - 8e - 2e - 53p 74n 18e - 8e -

12. Ag 1212 5252 417 318 2828

13. Ba 2+ Remove two electrons 1212 5858 418 318 2828

14. 5. Draw the Bohr Diagram for the Element Ba 2+ 56 2+ Ba Barium 137.3 Protons = 56 Atomic mass = 137 Neutrons = 137 - 56 = 81 Why does Ba form a 2+ ion? 8 valence electrons 18e - 8e - 2e - 56p 81n 18e - 8e -