Coordination Compounds - Result Question 61
####68. Among $[Ni(CO)_4],[Ni(CN)_4]^{2-},[NiCl_4]^{2-}$ species, the hybridization states of the Ni atom are, respectively (At. No. of $Ni=28$ )
[2004]
(a) $s p^{3}, d s p^{2}, d s p^{2}$
(b) $s p^{3}, d s p^{2}, s p^{3}$
(c) $s p^{3}, s p^{3}, d s p^{2}$
(d) $d s p^{2}, s p^{3}, s p^{3}$
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Solution:
- (b) $ _{28} Ni$ :
$Ni$ in $[Ni(CO)_4]$ :
Remember $CO$ is a strong ligand
$Ni^{2+}$ :
$Ni^{2+}$ in $[Ni(CN)_4]^{2-}$
Remember $CN^{-}$is also a strong ligand $Ni^{2+}$ in $[NiCl_4]^{2-}$
$Cl^{-}$is a weak ligand, hence no pairing of electrons takes place
