Drawing Bohr Diagrams Lesson 3.

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Presentation transcript:

Drawing Bohr Diagrams Lesson 3

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

1st Shell 2 1s 2nd Shell 7 F

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

1st Shell 2 2nd Shell 8 3rd Shell 8 4th 2 Ca 2 8

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

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

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

1 2 2 8 Add 1 electron 3 18 4 18 5 8 I-

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

1 2 2 8 3 18 4 17 5 2 Ag

1 2 Remove two electrons 2 8 3 18 4 18 5 8 Ba2+

56p 81n 5. Draw the Bohr Diagram for the Element Ba2+ 8 valence electrons 56 2+ Ba Barium 137.3 8e- 18e- 18e- Protons = 56 8e- Atomic mass = 137 2e- 56p 81n Neutrons = 137 - 56 = 81 Why does Ba form a 2+ ion?