Which set of oxide of nitrogen is paramagnetic in monomeric state?
Paramagnetic - An element has the number of odd valence electrons or unpaired electrons.
Valence electron of nitrogen is 5 and oxygen is 6.
NO total valence electron =5+6=11 it shows odd valence electron so it is paramagnetic.
N2O - 5×2+6=16
NO2- 5+2×6=17 it shows odd valence electron so it is paramagnetic.
NO - 5+6=11
Therefore, NO,NO2 both are paramagnetic in nature.
Hence, option(c) is the correct answer.