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Drawing Bohr Diagrams Lesson 3
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Bohr and Quantum Periodic Table Label the s, p, d, and f orbitals.
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1st Shell 1s 2nd Shell F
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Why does F form an ion with a 1- charge?
1. Draw the Bohr Diagram for the Element F F Fluorine 19.0 7 valence electrons (outer) 7e- Protons = 9 2e- Atomic mass = 19 9p 10n Neutrons = = 10 Why does F form an ion with a 1- charge?
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1st Shell 2 2nd Shell 8 3rd Shell 8 4th 2
Ca 2 8
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Why does Ca form an ion with a 2+ charge?
2. Draw the Bohr Diagram for the Element Ca Ca Calcium 40.1 2 valence electrons (outer) 2e- 8e- Protons = 20 8e- Atomic mass = 40 2e- 20p 20n Neutrons = = 20 Why does Ca form an ion with a 2+ charge?
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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
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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 = = 48 Does Kr form an ion?
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1 2 2 8 Add 1 electron 3 18 4 18 5 8 I-
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53p 74n 4. Draw the Bohr Diagram for the Element I-
8 valence electrons I Iodine 126.9 8e- 18e- 18e- Protons = 53 8e- Atomic mass = 2e- 53p 74n Neutrons = = 74 Why does I form a 1- ion?
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1 2 2 8 3 18 4 17 5 2 Ag
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1 2 Remove two electrons 2 8 3 18 4 18 5 8 Ba2+
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56p 81n 5. Draw the Bohr Diagram for the Element Ba2+
8 valence electrons Ba Barium 137.3 8e- 18e- 18e- Protons = 56 8e- Atomic mass = 2e- 56p 81n Neutrons = = 81 Why does Ba form a 2+ ion?
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