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Question

The correct electronic configuration for H2 is:

A
σ1s2
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B
σ(1s1)σ(1s1)
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C
σ(1s2)σ(1s1)
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D
σ1s3
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Solution

The correct option is C σ(1s2)σ(1s1)
As per the molecular orbital diagram:
Electronic configuration of H2 is: σ(1s)2
When one electron is added to hydrogen molecule, the
electronic configuration of H2 is: σ(1s)2σ(1s1)

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