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Which is not paramagnetic? A. O2 B. O2+ C. O22- D. O2-

Which is not paramagnetic? A. O2 B. O2+ C. O22- D. O2-

Grade:upto college level

1 Answers

SAHIL
3778 Points
7 years ago
O2is paramagnetic because it contains two 1/2 filled molecular orbitals (pi antibonding orbitals).  Taking 1 electron away O2+ would still leave one 1/2 filled orbital, while adding 1 electron would also leave one 1/2 filled orbital.  Thus those two species should also be paramagnetic.  Adding two extra electrons as in O2^2- would cause the two 1/2 filled orbitals to both become filled leaving no 1/2 filled orbitals, thus making it diamagnetic.

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