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Bonding : ImpossibleStructure (10 Variations)
Which of the following formulas represent substances that are likely to be stable at ordinary temperature and pressure? A good way to decide is to ask for which of the formulas is it possible to draw a reasonable Lewis structure (one that obeys the usual rules for drawing Lewis structures)?
Exploring Solid-State Structure and Physical Properties: A Molecular and Crystal Model ExerciseThomas H. Bindel This laboratory allows students to examine relationships among the microscopicmacroscopicsymbolic levels using crystalline mineral samples and corresponding crystal models. The exercise also reinforces Lewis dot structures, VSEPR theory, and the identification of molecular and coordination geometries. Bindel, Thomas H. J. Chem. Educ.2008, 85, 822.
Crystals / Crystallography |
Molecular Properties / Structure |
Molecular Modeling |
Solids |
VSEPR Theory |
Lewis Structures |
Physical Properties
Aromatic Bagels: An Edible Resonance AnalogyShirley Lin Describes a classroom demonstration involving the use of a bagel and cream cheese as an analogy for benzene that emphasizes the deficiencies of using a single Lewis structure to describe this structure. Lin, Shirley. J. Chem. Educ.2007, 84, 779.
Aromatic Compounds |
Lewis Structures |
Resonance Theory |
Molecular Properties / Structure
Predicting the Stability of Hypervalent MoleculesTracy A. Mitchell, Debbie Finocchio, and Jeremy Kua In this exercise, students use concepts in thermochemistry such as bond energy, ionization potentials, and electron affinities to predict the relative stability of two hypervalent molecules (PF5 and PH5) relative to their respective non-hypervalent counterparts. Mitchell, Tracy A.; Finocchio, Debbie; Kua, Jeremy. J. Chem. Educ.2007, 84, 629.
Covalent Molecules and the Octet RuleEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Lewis Structures |
Molecular Properties / Structure
Exceptions to the Octet RuleEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Lewis Structures |
Free Radicals |
Molecular Properties / Structure
Examples of Lewis StructuresEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
