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CHEM1901 - Resources for Week 3


Topics and Learning Outcomes

  • Wave Theory of Electrons and Atomic Energy Levels
    •  name the key experimental observations that led to the development of quantum mechanics
    •  convert between velocity, kinetic energy or momentum and wavelength of a free electron (or other particle of known mass)
    •  identify the components of the wave equation
    •  convert between the wavelength, frequency and energy of light
    •  calculate the allowed energy of a hydrogen-like atom of atomic number Z and quantum number n, and the wavelength of a transition between energy levels.
    •  appreciate how the wave nature of an electron leads to discrete energy levels
  • Shape of Atomic Orbitals and Quantum Numbers
    •  identify the key features of waves in 1-3 dimensions - displacement, amplitude, nodes
    •  explain the meaning of the orbital quantum numbers, n, l, m, and the designation of orbitals such as 1s, 3d, 4p, 4f..
    •  recognize the representations of waves as cross-sectional graphs, contour plots and lobes
    •  recognise the shapes of atomic orbitals in these representations
    •  understand how the wavefunction relates to electron charge density
    •  explain why the spatial extent of the electron increases with energy
  • Filling Energy Levels in Atoms Larger than Hydrogen
    •  draw out the electron configuration for atoms in the s-and p-blocks of the Periodic Table, including unpaired electrons
    •  explain why the orbitals with the same principal quantum number but different angular momentum quantum numbers have different energies in multi-electron atoms
    •  explain periodic trends in atomic radii and ionization energies in terms of quantum theory
    •  define electron affinity and explain some features of its periodic trends in terms of electronic configurations derived from quantum theory.

Textbook and eBook References

  • Wave Theory of Electrons and Resulting Atomic Energy Levels - Section 4.2
  • Shape of Atomic Orbitals and Quantum Numbers - Sections 4.3 and 4.4
  • Filling Energy Levels in Atoms Larger than Hydrogen - Sections 4.5 and 4.6
the eBook references are free and are taken from high quality sources.

Lecture Notes, Tutorial Worksheets & Answers and Suggested Exam Questions

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ChemCAL and iChem Resources

Contributed Links and Resources

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Wave Theory of Electrons and Resulting Atomic Energy Levels -  
  Characteristic properties of waves  
 
Tags: Waves | wavelength | frequency | radiation  |  Contributed by Adam Bridgeman
 
  Properties of Waves (short video tutorial)  
 
Description: Video tutorial on the properties of waves
Tags: Waves | wavelength | frequency | radiation  |  Contributed by Adam Bridgeman
 
Shape of Atomic Orbitals and Quantum Numbers -  
  Gallery of atomic and molecular orbitals  
 
Tags: atomic orbitals  |  Contributed by Adam Bridgeman
 
Filling Energy Levels in Atoms Larger than Hydrogen -  

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