Question

Which of the following complexes has highest stability constant at 298 K?

• A. $[CdC{l}_4{]}^{2-}$
• B. $[CdB{r}_4{]}^{2-}$
• C. $[Cd{I}_4{]}^{2-}$
• D. $\left[Cd\right(CN{)}_4{]}^{2-}$

Answer 1

The correct option is D

$\left[Cd\right(CN{)}_4{]}^{2-}$

Complex with stronger ligand is relatively more stable.