What is ABMO and BMO?

What is ABMO and BMO?

When two atomic orbitals combine, two molecular orbitals are formed. One is known as bonding molecular orbital (BMO) whereas other is anti-bonding molecular orbital (ABMO). BMO has lower energy and hence greater stability than the corresponding ABMO.

What is molecular orbital theory explain with example?

For example, e.g. O2 has 6 + 6 = 12 valence electrons which can be placed in bonding and anti-bonding orbitals. Notice that Molecular Orbital Theory predicts that O2 has unpaired electrons, so it will be paramagnetic….Molecular Orbital Theory.

Bond Bond Order
He2 0

What are the limitations of molecular orbital theory?

MO theory says that the electrons are delocalized. That means that they are spread out over the entire molecule. The main drawback to our discussion of MO theory is that we are limited to talking about diatomic molecules (molecules that have only two atoms bonded together), or the theory gets very complex.

How do you use the molecular orbital theory?


  1. Find the valence electron configuration of each atom in the molecule.
  2. Decide if the molecule is homonuclear of heteronuclear.
  3. Fill molecular orbitals using energy and bonding properties of the overlapping atomic orbitals.
  4. Use the diagram to predict properties of the molecule.

What is the difference between hybridization and molecular orbital theory?

Summary – Molecular Orbital Theory vs Hybridization Theory The key difference between molecular orbital theory and hybridization theory is that molecular orbital theory describes the formation of bonding and anti-bonding orbitals, whereas hybridization theory describes the formation of hybrid orbitals.

What is the difference between nonbonding and antibonding?

The key difference between antibonding and nonbonding is that antibonding orbitals increase the energy of a molecule whereas nonbonding orbitals do not change the energy of a molecule. The terms antibonding and nonbonding come under the molecular orbital theory.

How do you know if its Antibonding or bonding?

Explanation: Electrons in bonding orbitals stabilize the molecule because they are between the nuclei. They also have lower energies because they are closer to the nuclei. Antibonding orbitals place less electron density between the nuclei.

What are the types of molecular orbital?

Molecular orbitals are of three types: bonding orbitals which have an energy lower than the energy of the atomic orbitals which formed them, and thus promote the chemical bonds which hold the molecule together; antibonding orbitals which have an energy higher than the energy of their constituent atomic orbitals, and so …

What are the applications of molecular orbital theory?

Application of MO Theory There are two major uses of the orbital pictures and energies generated from MO theory. One is to predict reactivity, and the other is to predict properties like UV spectra.