Lets focus on Bohrs Atomic Model

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Lets focus on Bohrs Atomic Model
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Review

• Bohrs models has protons in the nucleus
• He said that electrons could have specific
  amounts of energy, leading them to move in
  certain orbits.

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The nucleus of an atom is surrounded by Energy
Levels. There are 7 different shells- 1 for each
period (row) on the Periodic Table of Elements.
Each shell is assigned a letter.
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Q
P
O
N
M
L
K
Nucleus
1
2
3
4
5
6
7
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There are also SUB ENERGY LEVELS They are
assigned a letter too! There are 4 S, P, D F
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S- can hold 2 electrons max P-can hold 6
electrons max D-can hold 10 electrons max F-can
hold 14 electrons max
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K shell
S only Can hold 2 electrons max
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L Shell
S- 2 electrons max P- 6 electrons max TOTAL
ALLOWED- 8
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M Shell
S-2 electrons max P- 6 electrons max D- 10
electrons max TOTAL ALLOWED- 18
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N Shell
S-2 electrons max P- 6 electrons max D- 10
electrons max F- 14 electrons max TOTAL ALLOWED-
32
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O Shell
S-2 electrons max P- 6 electrons max D- 10
electrons max F- 14 electrons max TOTAL ALLOWED-
32
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P Shell
S-2 electrons max P- 6 electrons max D- 10
electrons max TOTAL ALLOWED- 18
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Q Shell
S-2 electrons max P- 6 electrons max TOTAL
ALLOWED- 8
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Diagramming Elements using Bohrs model

• You can take any element on the periodic table
  and make a diagram of its electrons using Bohrs
  model.
• The electrons will go on the energy levels
• The protons or (atomic ) goes in the nucleus
• This will help you understand chemical bonding
  later in the chemistry unit

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Lets start easy! Figuring out how to diagram
Periods 1, 2 3 are simple because you only have
sub shells S P
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Period (row) 1 1 shell- K
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HELIUM
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Period (row) 2- 2 shells- K L
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FLUORINE
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Period (row) 3- 3 shells- K L M
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PHOSPHORUS