According to molecular orbital theory, w...

According to molecular orbital theory, which of the following will not be a viable molecule?

A

`H_2^(-)`

B

`H_2^(2-)`

C

`He_2^(2+)`

D

`He_2^(+)`

Verified by Experts

The correct Answer is:

B

`H_2^(2-)` have bond order zero `therefore` do not exist
`H_2^(2-)tosigma1s^2,sigma^(**)1s^2,B.O.=(2-2)/2=0`.

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