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CHEM1903 - Resources for Week 4

Topics and Learning Outcomes

  • The Periodic Table and Periodic Trends
    •  give examples of periodic trends and chemical properties used to construct the Periodic Table.
    •  assign atoms to appropriate groups in the Periodic Table on the basis of their properties
    •  explain the historic significance of key events in the development of modern atomic structure theory, such as nuclear charge, atomic mass and the discovery of the neutron
    •  define ionization energy and atomic radius and know their trends in the Periodic Table.
  • Bonding in H2 - MO theory
    •  explain the reason for bond formation being due to energy lowering of delocalised electrons in molecular orbitals
    •  describe a molecular orbital
    •  recognise sigma bonding, sigma* antibonding and non-bonding orbitals
    •  assign the (ground) electron configuration of a diatomic molecule.
    •  define HOMO and LUMO, and homonuclear and heteronuclear diatomic molecules
  • Bonding in O2, N2, C2H2 and C2H4
    •  distinguish between various types of bonding, anti-bonding and non-bonding orbitals
    •  distinguish between polar and apolar bonds in diatomic molecules and relate it to electron attraction of a nucleus
    •  draw out ground state electronic configurations for molecules and molecular ions given their allowed energy levels
    •  calculate bond order from molecular electronic configurations
    •  relate Electronic Absorbance Spectra to electronic structure

Textbook and eBook References

  • Periodic Table and the Periodic Trends - Sections 4.8 and 4.9
  • Bonding in H2 - MO theory - Sections 5.6 - 5.7
  • Bonding in O2, N2, C2H2, C2H4 and CH2O - Sections 5.6 - 5.7
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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Periodic Table and the Periodic Trends -  
  The Shape of the Periodic Table (short video tutorial)  
Tags: periodic table | electronic configuration | atomic configuration  |  Contributed by Adam Bridgeman
  Welcome to the elements  
Description: A close look at chemical elements, the basic building blocks of the universe. Where do we get them, what do we use them for and how do they fit into the economy?
Tags: atoms | periodic table  |  Contributed by Adam Bridgeman
Bonding in H2 - MO theory -  
  Gallery of atomic and molecular orbitals  
Tags: molecular orbitals  |  Contributed by Adam Bridgeman
Bonding in O2, N2, C2H2, C2H4 and CH2O -  
  Molecular orbital Theory  
Description: This is an excellent website explaining molecular bonding concepts. Things like boning/antibonding/non bonding orbitals are explained in great details!
  Calculating bond order from MO diagrams  
Tags: MO diagrams | molecular orbitals | bond order  |  Contributed by Chiara Neto
  Liquid Oxygen is Magnetic  
Description: Video of liquid oxygen sticking to a magnet
Tags: liquid oxygen | paramagnetism  |  Contributed by Tim Schmidt

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