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Which of the following is the correct order for bonding energies of molecular orbitals?

Which of the following is the correct order for bonding energies of molecular orbitals? Correct Answer σ1s < σ*1s < σ2s < σ*2s

Energy of bonding MO is less than that of anti-bonding MO formed from same atomic orbitals. Also, MO formed from atomic orbitals of higher energy possess higher energy.

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