5)On the basis of VBT, Why molecule of Hez does not exist?
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Each helium atom has two electrons in 1s-orbital and therefore, there are four electrons in He2 molecule. ... of repulsive and attractive forces then He2 has 5 repulsive and only 4 attravtive forces thus due to increased repulsion the atoms get separated or can't come closer to form a bond.
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Explanation:
Each helium atom has two electrons in 1s-orbital and therefore, there are four electrons in He2 molecule. These electrons will be accommodated in si1ls and s*1s MOs as shown below. The zero bond order value indicates that there is no net bonding and He2 molecule should not be formed
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