Embibe Experts Solutions for Chapter: Coordination Compounds, Exercise 3: Level 3

For a octahedral complex $({\mathrm{d}}^6$ configuration$)$ having ${\mathrm{\Delta }}_0=25000 {\mathrm{cm}}^{-1}$ and $\mathrm{P}=15000 {\mathrm{cm}}^{-1},$ the crystal field stabilization energy is:

Select incorrect match for ${\left[\mathrm{M}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$ complex.

Which of the following is incorrectly matched complex?

Which of the following system has the maximum number of unpaired electrons?

Stability constant is more for the complex

Choose the complex, which is paramagnetic

(i) ${\left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$

(ii) ${\mathrm{K}}_3\left[\mathrm{Cr}{\left(\mathrm{CN}\right)}_6\right]$

(iii) ${\mathrm{K}}_3\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]$

(iv) ${\mathrm{K}}_2\left[\mathrm{Ni}{\left(\mathrm{CN}\right)}_4\right]$

What is the ratio of uncomplexed to complexed ${\mathrm{Zn}}^{2+}$ ion in a solution that is $10 \mathrm{M}$ in ${\mathrm{NH}}_3,$ if the stability constant of ${\left[\mathrm{Zn}{\left({\mathrm{NH}}_3\right)}_4\right]}^{2+}$ is $3\times {10}^9?$

For the complex ${\mathrm{ML}}_2,$ stepwise formation constants for $\mathrm{M}+\mathrm{L}\rightleftharpoons \mathrm{ML}$ and $\mathrm{ML}+\mathrm{L}\rightleftharpoons {\mathrm{ML}}_2$ are $4$ and $3$, respectively. Hence, the overall stability constant for $\mathrm{M}+2\mathrm{L}\rightleftharpoons {\mathrm{ML}}_2$ is