Question

Three rules of linear combination of atomic orbitals

Answer 1

Answer:

For the formation of proper molecular orbital, proper energy and orientation are required. For proper energy, the two atomic orbitals should have the same energy of orbitals and for the proper orientation, the atomic orbitals should have proper overlap and the same molecular axis of symmetry.

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Answer 2

Answer:

Rules for the LCAO method are:

The same energy of combining orbitals: The combining atomic orbitals must be of equal energy or approximately same energy.

Same symmetry along the atomic orbital:The combining atoms should have the same symmetry along the molecular axis for proper combination.