on VSEPR and Molecular Orbital Theories
This quiz covers the Valance Shell Electron Pair Repulsion
(VSEPR) model for the
prediction of molecular geometry (shapes of molecules),
and the molecular orbital (MO)
approach to electronic configurations of molecules.
Know the number of valence electrons for any main-group element.
Know which are likely the central atom in a molecule.
Usually the least electronic negative atom in a molecule is at the center.
Evaluate the number of electron pairs (also called
VSEPR pairs or steric number) around the central atom.
Describe the geometry of the molecule using linear, bent,
trigonal planar, tetrahedral, trigonal pyramidal, trigonal bipyramidal,
see saw (or butterfly), T-shape, octahedral etc.
Describe the molecular geometry based on the
hybrid orbitals of the central atom.
Apply valance bond, hybrid orbitals, and molecular orbital theories
to interpret molecular structures of organic compounds --
Draw relative energy levels of molecular orbitals,
derived from atomic orbitals. Fill the electrons in these orbitals for
molecules and write the electronic configurations.
Determine the bond order and trend of bond length in related compounds
and predict other properties such as magnetic properties.