Which of the following is/are paramagnetic?

$N O_{2}, N O, N_{2} O_{4}, N_{2} O_{2}, N_{2} O_{5}$

Only

N O_{2}

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N O_{2}, N O

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N O, N O_{2}, N_{2} O_{5}

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All are paramagnetic

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Solution

The correct option is D $N O_{2}, N O$
Among the various oxides of nitrogen, only $N O$ and $N O_{2}$ are paramagnetic because they contain odd no of electron and unpaired electron.

$N_{2} O_{2}, N_{2} O_{4}$ and $N_{2} O_{5}$ are diamagnetic as they contain even number of electrons.

Here $N_{2} O_{4}$ , the dimer of $N O_{2}$ , it is also diamagnetic.

Option B is correct

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N O, N O_{2}, N_{2} O, N_{2} O_{4}

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Among the following the total no. of species which are paramagnetic

$O_{2}, S_{2}, C N^{-}, N O^{+}, O_{2}^{2 +}, O_{2}^{2 -}, B_{2}, N_{2}^{2 -}, O_{2}^{+}, N O, N O_{2}, N_{2} O$ ___

N O_{2}

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N O_{2}

N_{2} O_{4}

N O_{2}

N_{2} O_{4}

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