QJEEM25Chc1a0: JEE Main 2025 Chemistry - Class 11 JEEM25Chc1a0 Solution: Total number of molecules/species from following which will be…

$\mathrm{O}_2 \rightarrow 2$ unpaired electrons according to MOT

$\mathrm{O}_2{ }^{+} \rightarrow 1$ unpaired electrons according to MOT

$\mathrm{O}_2^{-} \rightarrow 1$ unpaired electrons according to MOT

$\mathrm{NO} \rightarrow$ odd electron species

$\mathrm{NO}_2 \rightarrow$ odd electron species

$\mathrm{K}_2\left[\mathrm{NiCl}_4\right] \rightarrow \mathrm{Ni}^{2+} \Rightarrow 3 \mathrm{~d}^8$ weak Ligand, C.N. $=4$

$\Rightarrow$ Tetrahedral, Paramagnetic with 2 unpaired electrons