Explain molecular orbital theory pls>>>>>...?

Question

Explain molecular orbital theory pls>>>>>...?

Answer 1

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Answer 2

I am going to try and explain this without equations or else it would become impossible here. I am also assuming you are well familiar with the structure of atoms described by Bohr.

When two atoms are brought close together with the application of energy the electrons in the outermost orbit of the atoms start feeling the attractive force of the other nucleus in the vicinity. Gravity works in much the same way so you can substitute electrons and nucleus with satellites and planets with the only difference that here the planets repel planets and satellites repel satellites. It helps to draw analogy with something you can imagine.

As the outermost electrons start spinning around both the nucleus a new orbit comes into picture. The biggest difference is that an electron is so small that there is not way of finding exactly where it is. Hence, an equation gives the probability map of where the electron can be around either nucleus. This is the new molecular orbital. As with all changes in orbits at the atomic level this one is also accompanied with the release or absorption of energy. The exact details can be worked out with mathematics. But basically the concept is what I have described above. How detailed you need to go into the mathematics would depend on your level.

Answer 3

It's a quite complicated theory describing  bonding using bonding and antibonding orbitals filled according to there energy (lowest energy orbitals first) to determine whether or not a molecule can be stable.  It's first major victory was that it correctly predicted that diatomic oxygen would be paramagnetic.  It also predicted the temporary formation of He2.  It's a difficult theory to work with, but it's a comprehensive model that can be applied to any situation chemists have come across.