Atomic Structure Notes

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Atomic Structure Notes
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Thomson Model
The pudding had a positive charge and the
plums had a negative charge.
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Rutherford Model Gold Foil Experiment

• Discovered a Nucleus and that the electrons were
  away from the nucleus.

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Bohr Model

• Bohr included only protons and electrons in his
  original model.
• Chadwick Bohrs student discovered neutrons.

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Wave Model
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Subatomic Particles Location

• Proton (p) Positive Charge Nucleus
• Neutron (n) Neutral Charge - Nucleus
• Electron (e-) Negative Charge Energy
  Levels
• 
  Electron Cloud

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Atomic Structure
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Atomic Structure

• Atomic Number p and e-
• Atomic Mass p n
• Protons and neutrons make up the mass of the atom
• n atomic mass atomic number

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Valence Electrons

• Valence electrons are the electrons in the
  outermost energy level.

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Modern Bohr Model
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Energy Levels

• 1st 2e-
• 2nd 8e-
• 3rd 18e-
• 4th 32e-
• 5th 32e-
• 6th 18e-
• 7th 8e-