Packing Efficiency Calculation
This video walks through how to calculate packing efficiency of unit cells.
This video walks through how to calculate packing efficiency of unit cells.
Watch this video for a refresher on VSEPR Theory
A problem generator for Born-Haber Cycle practice can be found in the link below. Strongly recommended to draw cycle diagrams as presented in class based on the given information.
Don’t forget to keep track of signs & stoichiometry too!
http://www.sciencegeek.net/Activities/bornhaber.html
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University of Sydney has created a practice website for reviewing different parts of molecular orbital diagrams. Using this resource you can add pieces to pre-drawn MO diagrams for over 20 different molecules.
The site includes opportunities to practice filling in electrons, attaching the names/symbols of MOs, and matching orbital overlap drawings to MOs.
Give them a try here:
https://scilearn.sydney.edu.au/fychemistry/calculators/mo_diagrams.shtml
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For help in understanding orbital changes upon mixing view this video from Oxford University Press:
Note: The video uses nomenclature u and g labels for the orbitals. For the CHEM 251 course you can ignore those symbols.
https://www.youtube.com/watch?v=qoYEOMMJCXc
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A quick video reviewing Fajans’ Rules for determining covalent versus ionic bonding.
A couple of examples given and also an example relating to the melting point of substances.
https://www.youtube.com/watch?v=u-bF5cQqhnI
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A video guide to Slater’s rules, including some worked examples.
https://www.youtube.com/watch?v=7wrTWlXI2IY
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