Chemical BondingHard
Question
In which of the following pairs of molecules/ions, both the species are not likely to exist ?
Options
A.H2+, He22-
B.H2-, He22-
C.H22+, He2
D.H2-, He22+
Solution
According to M.O.T. species which has zero B.O., they do not exist.
Energy order of M.O. in H2 and He2 = σls, σ*ls
⇒ H22+ have zero electron ; B.O. = zero
⇒ He2 have two bonding electron & Two antibonding electrons ; B.O. = zero
Energy order of M.O. in H2 and He2 = σls, σ*ls
⇒ H22+ have zero electron ; B.O. = zero
⇒ He2 have two bonding electron & Two antibonding electrons ; B.O. = zero
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