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Draw and explain the M.O. diagram of lithium molecule.

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1. Electronic configuration of Li atom – 1s

2. Electronic configuration of Li2 molecule is σ1s2 σ*1sσ2s2

3. Bond order = \(\frac{N_b-N_a}{2}\) = \(\frac{4-2}{2}\)

4. Li2 molecule has no unpaired electrons, hence it is diamagnetic.

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