Among the species given below, the total number of diamagnetic species is. . . . . $H$ atom, $NO _2$ monomer, $O _2^{-}$(superoxide), dimeric sulphur in vapour phase, $MnsO _4$, $\left( NH _4\right)_2\left[ FeCl _4\right],\left( NH _4\right)_2\left[ NiCl _4\right], K _2 MnO _4, K _2 CrO _4$
Among the species given below, the total number of diamagnetic species is. . . . . $H$ atom, $NO _2$ monomer, $O _2^{-}$(superoxide), dimeric sulphur in vapour phase, $MnsO _4$, $\left( NH _4\right)_2\left[ FeCl _4\right],\left( NH _4\right)_2\left[ NiCl _4\right], K _2 MnO _4, K _2 CrO _4$
- A
$5$
- B
$4$
- C
$1$
- D
$2$
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