Molecular Orbital Diagram

Fundamental steps in deriving mo diagrams step 1. Find the valence electron configuration of each atom in the molecule.

Molecular Orbitals For Heterogeneous Diatomic Molecules

Look up the shapes of the salcs.

Molecular orbital diagram. The molecular orbital diagram for an o 2 molecule would therefore ignore the 1s electrons on both oxygen atoms and concentrate on the interactions between the 2s and 2p valence orbitals. Decide if the molecule is homonuclear of heteronuclear. Arrange the salcs of each molecular fragment in increasing order of energy.

Molecular orbital theory posits the notion that electrons in molecules likewise exist in different orbitals that give the probability of finding the electron at particular points around the molecule. This scheme of bonding and antibonding orbitals is usually depicted by a molecular orbital diagram such as the one shown here for the dihydrogen ion h 2. The general procedure for constructing a molecular orbital diagram for a reasonably simple molecule can be summarized as follows.

Atomic valence electrons shown in boxes on the left and right fill the lower energy molecular orbitals before the higher ones just as is the case for atomic orbitals. The only orbitals that are important in our discussion of molecular orbitals are those formed when valence shell orbitals are combined. Assign a point group to the molecule.

To produce the set of orbitals for a molecule we add together the valence atomic wavefunctions for the bonded atoms in the molecule. Fill molecular orbitals using energy and bonding properties of the overlapping atomic. A molecular orbital diagram or mo diagram is a qualitative descriptive tool explaining chemical bonding in molecules in terms of molecular orbital theory in general and the linear combination of atomic orbitals lcao method in particular.

Schematic Molecular Orbital Diagrams Of Al 2 And Alsi For