why molecular orbital theory applicable for interaction between atomic orbitals of the same energy level..

Dear deepak kumar,

Molecular Orbital Theory The goal of molecular orbital theory is to describe molecules in a similar way to how we describe atoms, that is, in terms of orbitals, orbital diagrams, and electron configurations.

So you can be clear now..

For further reference please click on the following link given below

http://en.wikipedia.org/wiki/Molecular_orbital_theory

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