Question

$[NiC{l}_4{]}^{2-},[PtC{l}_4{]}^{2-}$ and $[PdC{l}_4{]}^{2-}$ are respectively :-

• A. high spin, low spin, high spin
• B. low spin, low spin, low spin
• C. high spin, low spin, low spin
• D. low spin, high spin, high spin

Answer 1

Answer: (C)

$[NiC{l}_4{]}^{2-}\to$ Ni is 3d series element

$\to C{l}^{-}$ weak ligand

$\to$ High spin

$[PdC{l}_4{]}^{2-}\to$ Pd is 4d series element

$\to$ Low spin

$[PtC{l}_4{]}^{2-}\to$ 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.