25-04-2012, 10:25 AM
Molecular Orbital Theory
Molecular Orbital Theory.ppt (Size: 2.22 MB / Downloads: 58)
A Little Review
What is an orbital?
Give an example of an atomic orbital?
What is the name of the mathematical function
that determines the shape of an orbital?
What is the maximum number of electrons
that can be in one orbital?
Molecular Orbitals
When two atoms come close to each other,
what happens to the orbitals of each atom?
Orbital wave functions
can add & subtract to give
new wave functions and
corresponding
molecular orbitals (mo).
Atoms bond
together when
the wave functions
constructively overlap.
SIGMA BOND (s)
A bond between two atoms in which the electron
density of the molecular orbital is between the
two nuclei is called a sigma bond.
Molecular Orbital Theory
Atomic orbitals can mix together
to give a new set of molecular orbitals.
One molecular orbital is formed for each atomic orbital used
Similarities of atomic & molecular orbitals
2 electrons max/orbital
occupy specific regions of space