Question

which of the following has maximum no of unpaired electrons a)O2 b) 02^+​

Answer 1

Explanation:

O2 has 2 unpaired has electron white O+2 and O-2 have one each unpaired electron and O2+2 does not have any unpaired electron .

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Answer 2

The correct option about maximum no of unpaired electrons is option a) O2.

• O2 is diatomic molecule and ionisation of O2 give O2+ ion.
• O2 is paramagnetic as it contains two unpaired electron whereas O2+ is also paramagnetic as it also contains one unpaired electron.
• Electronic configuration of O2 is σ1s² σ∗1s² σ2s² σ∗2s² σ2px² π2py²,π2pz²π∗2py¹=π∗2pz¹.
• Electronic configuration of O2+ is σ1s² σ∗1s² σ2s² σ∗2s² σ2px² π2py²,π2pz² π∗2py¹=π∗2pz.