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Asked by Manoj Roy
Apr 3, 2015
Member since Apr 24, 2013
Ex: Formation of Helium (He₂) molecule.
Electronic configuration of Helium atom = 1s²
Two 1s² orbitals combines to form two molecular orbitals.
Electronic configuration of Helium molecule = (σ1s)2 (σ*1s)2
Bond order in Helium molecule
=½ [(Number of bonding electrons) - (number of anti-bonding electrons)]
= ½ [2 -2]
Thus 'Zero' value indicates that Helium (He₂) molecule does not exist.