Which molecule/ion out of the following does not contain unpaired electrons?
(i) N2+
(ii) O2
(iii) O22–
(iv) B2
Which molecule/ion out of the following does not contain unpaired electrons?
(i) N2+
(ii) O2
(iii) O22–
(iv) B2
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1 Answer
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This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Option (iii)
The molecular orbital diagram of O22-, π∗2Px and π∗2Py molecular orbitals are completely filled, which are partially filled in O2. These are no unpaired electrons. So, O22-does not contain unpaired electrons.
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