Question

The tetrahedral ${\left[Co{I}_4\right]}^{2-}$ and square planar ${\left[PdB{r}_4\right]}^{2-}$ complex ions are respectively :

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

Answer 1

The correct option is B high spin, low spin

Tetrahedral ${\left[Co{I}_4\right]}^{2-}$, $C{o}^{+2},d^7,s{p}^3$ hybridization so high spin complex.
Square planar ${\left[PdB{r}_4\right]}^{2-}$, $P{d}^{+2},d^8,ds{p}^2$ hybridization so low spin complex.