Chemistry - Coordination Chemistry Question with Solution | TestHub

$[\mathrm{N}\mathrm{i}\mathrm{C}{\mathrm{l}}_4{]}^{2-}\to$Ni is 3d series element
$\to \mathrm{C}{\mathrm{l}}^{-}$weak ligand
$\to$High spin
$[\mathrm{P}\mathrm{d}\mathrm{C}{\mathrm{l}}_4{]}^{2-}\to$Pd is 4d series element
$\to$Low spin
$[\mathrm{P}\mathrm{t}\mathrm{C}{\mathrm{l}}_4{]}^{2-}\to$Pt is 5d series element
$\to$${\text{Cl}}^{-}$act as strong field ligand for$\text{Pt}$and$\text{Pd}$as they are$\text{5d,}\text{4d}$elements respectively with high effective nuclear charge.