1) Among $[Ni(CO)_{4}]$, $[NiCl_{4}]^{2-}$ . $[Co(NH_{3})_{4}]Cl_{2}] Cl$ , $Na_{3}[CoF_{6}]$, $Na_{2}O_{2}$ and $CsO_{2}$ , the total number of paramagnetic compound is A) 2 B) 3 C) 4 D) 5 Answer: Option BExplanation:
