Total number of unpaired electrons present in the central metal atoms/ions of is_______ [2026]

Question

Total number of unpaired electrons present in the central metal atoms/ions of

$[Ni {(CO)}_{4}], {[{NiCl}_{4}]}^{2 -}, [{PtCl}_{2} {({NH}_{3})}_{2}], {[Ni {(CN)}_{4}]}^{2 -} and {[Pt {(CN)}_{4}]}^{2 -}$ is_______. [2026]

Smart Achievers · Accepted Answer

(2)

$In [Ni {(CO)}_{4}], {Ni}^{0} : 3 d^{8} 4 s^{2}$

$Hybridisation state : s p^{3}$

$Unpaired electron = 0$

$In {[{NiCl}_{4}]}^{2 -}, {Ni}^{2 +} : 3 d^{8}$

$Hybridisation state : s p^{3}$

$Unpaired electron = 2$

$In {[{PtCl}_{4}]}^{2 -}, {Pt}^{2 +} : 5 d^{8}$

$Hybridisation state : d s p^{2}$

$Unpaired electron = 0$

$In {[Ni {(CN)}_{4}]}^{2 -}, {Ni}^{2 +} : 3 d^{8}$

$Hybridisation state : d s p^{2}$

$Unpaired electron = 0$

$In [Pt {({NH}_{3})}_{2} {Cl}_{2}], {Pt}^{2 +} : 5 d^{8}$

$Hybridisation state : d s p^{2}$

$Unpaired electron = 0$

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