322231
Among \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right],\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-},\left[\mathrm{NiCl}_{4}\right]^{2-}\) species, the hybridisation states of \(\mathrm{Ni}\) atom are, respectively.(Atomic number of \(\mathrm{Ni}=28\) )
(a) \(\operatorname{In}\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\), nickel is \({\text{s}}{{\text{p}}^{\text{3}}}\) -hybridised because in it oxidation state of \(\mathrm{Ni}\) is zero. So, its electronic configuration is \({}_{{\text{28}}}{\text{Ni}}\)=\({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}{\rm{,4}}{{\rm{s}}^{\rm{2}}}\) (b) \(\operatorname{In}\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\), nickel is present as \(\mathrm{Ni}^{2+}\) so its configuration is \({\rm{ = 1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}\)} \(\mathrm{CN}^{-}\)is a strong field ligand, hence it makes \(\mathrm{Ni}^{2+}\) electrons to be paired up. (III) \(\mathrm{In}\left[\mathrm{NiCl}_{4}\right]^{2-}\) species, nickel is present as \(\mathrm{Ni}^{2+}\), so its configuration is \({\rm{ = 1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}\) \(\mathrm{Cl}^{-}\)is a weak field ligand, hence \(\mathrm{Ni}^{2+}\) electrons are not paired.
CHXII09:COORDINATION COMPOUNDS
322232
Dipole moment will be zero in the complexes
322231
Among \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right],\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-},\left[\mathrm{NiCl}_{4}\right]^{2-}\) species, the hybridisation states of \(\mathrm{Ni}\) atom are, respectively.(Atomic number of \(\mathrm{Ni}=28\) )
(a) \(\operatorname{In}\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\), nickel is \({\text{s}}{{\text{p}}^{\text{3}}}\) -hybridised because in it oxidation state of \(\mathrm{Ni}\) is zero. So, its electronic configuration is \({}_{{\text{28}}}{\text{Ni}}\)=\({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}{\rm{,4}}{{\rm{s}}^{\rm{2}}}\) (b) \(\operatorname{In}\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\), nickel is present as \(\mathrm{Ni}^{2+}\) so its configuration is \({\rm{ = 1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}\)} \(\mathrm{CN}^{-}\)is a strong field ligand, hence it makes \(\mathrm{Ni}^{2+}\) electrons to be paired up. (III) \(\mathrm{In}\left[\mathrm{NiCl}_{4}\right]^{2-}\) species, nickel is present as \(\mathrm{Ni}^{2+}\), so its configuration is \({\rm{ = 1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}\) \(\mathrm{Cl}^{-}\)is a weak field ligand, hence \(\mathrm{Ni}^{2+}\) electrons are not paired.
CHXII09:COORDINATION COMPOUNDS
322232
Dipole moment will be zero in the complexes
322231
Among \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right],\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-},\left[\mathrm{NiCl}_{4}\right]^{2-}\) species, the hybridisation states of \(\mathrm{Ni}\) atom are, respectively.(Atomic number of \(\mathrm{Ni}=28\) )
(a) \(\operatorname{In}\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\), nickel is \({\text{s}}{{\text{p}}^{\text{3}}}\) -hybridised because in it oxidation state of \(\mathrm{Ni}\) is zero. So, its electronic configuration is \({}_{{\text{28}}}{\text{Ni}}\)=\({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}{\rm{,4}}{{\rm{s}}^{\rm{2}}}\) (b) \(\operatorname{In}\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\), nickel is present as \(\mathrm{Ni}^{2+}\) so its configuration is \({\rm{ = 1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}\)} \(\mathrm{CN}^{-}\)is a strong field ligand, hence it makes \(\mathrm{Ni}^{2+}\) electrons to be paired up. (III) \(\mathrm{In}\left[\mathrm{NiCl}_{4}\right]^{2-}\) species, nickel is present as \(\mathrm{Ni}^{2+}\), so its configuration is \({\rm{ = 1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}\) \(\mathrm{Cl}^{-}\)is a weak field ligand, hence \(\mathrm{Ni}^{2+}\) electrons are not paired.
CHXII09:COORDINATION COMPOUNDS
322232
Dipole moment will be zero in the complexes
322231
Among \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right],\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-},\left[\mathrm{NiCl}_{4}\right]^{2-}\) species, the hybridisation states of \(\mathrm{Ni}\) atom are, respectively.(Atomic number of \(\mathrm{Ni}=28\) )
(a) \(\operatorname{In}\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\), nickel is \({\text{s}}{{\text{p}}^{\text{3}}}\) -hybridised because in it oxidation state of \(\mathrm{Ni}\) is zero. So, its electronic configuration is \({}_{{\text{28}}}{\text{Ni}}\)=\({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}{\rm{,4}}{{\rm{s}}^{\rm{2}}}\) (b) \(\operatorname{In}\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\), nickel is present as \(\mathrm{Ni}^{2+}\) so its configuration is \({\rm{ = 1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}\)} \(\mathrm{CN}^{-}\)is a strong field ligand, hence it makes \(\mathrm{Ni}^{2+}\) electrons to be paired up. (III) \(\mathrm{In}\left[\mathrm{NiCl}_{4}\right]^{2-}\) species, nickel is present as \(\mathrm{Ni}^{2+}\), so its configuration is \({\rm{ = 1}}{{\rm{s}}^{\rm{2}}}{\rm{,2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{,3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}\) \(\mathrm{Cl}^{-}\)is a weak field ligand, hence \(\mathrm{Ni}^{2+}\) electrons are not paired.
CHXII09:COORDINATION COMPOUNDS
322232
Dipole moment will be zero in the complexes
