why does He2 not exist?
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If we consider that He2 molecule exists
Then, according to modern chemistry it's configuration will be σ1s2 σ*1s2
Calcating its Bond order i.e. number of covalent bonds,
Bond order in He2 molecule = ½[number of electrons in bonding orbital- number of electrons in anti bonding orbital]
=> 1/2 [2-2]
=> 0
B.O = number of covalent bond = 0
Since there are no bonds in the molecule, He2 does not exist.
Then, according to modern chemistry it's configuration will be σ1s2 σ*1s2
Calcating its Bond order i.e. number of covalent bonds,
Bond order in He2 molecule = ½[number of electrons in bonding orbital- number of electrons in anti bonding orbital]
=> 1/2 [2-2]
=> 0
B.O = number of covalent bond = 0
Since there are no bonds in the molecule, He2 does not exist.
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