Question

Which molecules or ion out of the following does not contain unpaired electron?

(a) Na+

(b) O2

(c) 2 O2

(d) B2​

Answer 1

Answer:

The molecular orbital diagram of O2−2,π∗2Px and π∗2Py molecular orbitals are completely filled , which are partially filled in O2. These are no unpaired electrons. So, O2−2 does not contain unpaired electrons.

Explanation:

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Answer 2

Answer:

o2

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