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

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SAHIL · Answer

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

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

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