Which.of the following statement is not correct from the view point of molecular orbital theory?

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Be2 is not a stable molecule

He2 is not stable but He2+ is expected to exist

Bond strength of N2 is maximum amongst the homonuclear diatomic molecules belonging to the second period

The order of energies of molecular orbitals in N2 molecule is σ2s<σ*2s<σ2pz<π2px≃π2py<π*2px≃π*2py>σ*2pz

answer is D.

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Detailed Solution

It is incorrect. The correct order of energies of molecular orbitals in N2 molecule isσ2s<σ*2s<π2px≃π2py<σ2pz<π*2px≈π*2py<σ*2pz

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