Che 111 (Hill) Chapters 7,8 Highlights

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Che 111 (Hill)Chapters 7,8 Highlights

• Dr. McGoldrick

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Early Experimenters

• The electron - Thomson and Millikan
• Rutherford - Gold Foil
• Early Atomic Models

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Atomic TheoryBackground

• Terms - EM Radiation?, wavelength?,
  frequencyamplitude (nodes)
• Continuous Spectrumfrom ? to radio

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Computations

• ?? cBlack Body Radiation PhotoE
  EffectQUANTA PHOTONS
• E h? or E h c/ ?

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The Bohr Model

• Cathode Rays and Atomic SpectraRydberg Equation
• Bohrs H atom (1913)-quantization of electron
  energy- circular (elliptical) electron path

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Modern Theory Quantum Mechanics

• Heisenbergs Uncertainty Principle-
  probability volumes- Orbital shapes or type
  s, p, d, and f
• Wave property of electronsdeBroglie ? h/mv
  matter waves

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Quantum Numbers (qn)

• Schroedingers Wave Equation, ?Quantum Numbers
  n,l, ml
• n principle qn, electron energy n 1,2,3
  integers
• azimuthal qn, subshells l 0 to n - 1
• ml magnetic qn, orbitals ml - l to l
  (orientations)

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Atomic Architecture contd.

• Paramagnetism and diamagnetism
• m s ½ or - ½ electron spin
• Pauli Exclusion
• Hunds Rule

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Chapter 8

• Electron Configurations
• Atomic Properties

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Electron FillingAufbau

• Electron Configurations
• Orbital Box Diagrams
• Examples all A elements 1st transition (note
  exceptions Cu and Cr)
• USE THE CHART!!

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Periodic Trends

• Atomic Size Z effective nuclear charge
• Ionization Energy
• Electron Affinity

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Homework Chapter 7 8