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Chemistry
Formation of He2 molecule is not possible because:
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Q. Formation of $He_2$ molecule is not possible because:
KCET
KCET 2022
A
$N _{ b }> N _{ a }$
B
$N _{ b }< N _{ a }$
C
$N _{ b }= N _{ a }$
D
$N _{ b }- N _{ a }$ is -ve
Solution:
No. of electrons in bonding and anti - bonding molecular orbital is same and is equal to $2$
Bond order $= N _{ b }- N _{ a } / 2=2-2 / 2=0$
Therefore no bond exists between $He$ - atom