Which of the following show paramagnetism ? .

Options

A. `Na_(2)O`
B. `NO_(2)`
C. `NO`
D. `KO_(2)`

Answer

B, C, D

Explanation

`Na_(2)O` contains `O^(2-)` oxide ion which does not contain unpaired `e^(-')s`
(b) It contains one unpaired `e^(-)` and hence is paramagnetic
(c ) Structure of `NO`
`.overset(..)N =O`
It contains unpaired `e^(-)` and hence is paramagnetic
(d) `KO_(2)` contains `O_(2)^(Θ)` (superoxide) and contains one unpaired `e^(-)` and is paramagnetic

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