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JEE Main Chemistry question

ChemistryChemical Bonding and Molecular StructureJEE Main

How many of the species are paramagnetic? N_2O, NO, NO_2, O_2, NO_2^+, NO^+, CO^+

Answer: 4

Solution

(16 valence e, all paired), (16 valence e, isoelectronic with ) and (10 valence e, isoelectronic with ) are all diamagnetic (even electron count, closed shell).

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Question ID VK-138453