MCQ
The reaction, which forms nitric oxide, is
- A$C$ and ${O_2}$
- B$Cu$ and ${N_2}O$
- C$Na$ and $N{H_3}$
- ✓$Cu$ and $HN{O_3}$
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$(A)$ paramagnetic $(B)$ bent in geometry $(C)$ an acidic oxide $(D)$ colorless

$A : 1s^2\, 2s^2\, 2p^6$
$B : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^3$
$C : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^5$