Co-ordination compounds practice · Mixed difficulty

What will be the correct order for the wavelengths of absorption in the visible region of the following:
$\mathop {{{\left[ {{\text{Ni}}{{\left( {{\text{N}}{{\text{H}}_3}} \right)}_6}} \right]}^{2 + }}}\limits_{\text{A}} ,\mathop {{\text{Ni}}{{({\text{CN}})}_6}{]^{ - 4}}}\limits_{\text{B}} ,\mathop {{{\left[ {{\text{Ni}}{{\left( {{{\text{H}}_2}{\text{O}}} \right)}_6}} \right]}^{ + 2}}}\limits_{\text{C}} ,\mathop {{{\left[ {{\text{NiC}}{{\text{l}}_6}} \right]}^{ - 4}}}\limits_{\text{D}}$

According to spectrochemical series strongest field ligand among the following is

${K}_4\left[{Fe}({CN})_6\right]$ is a :

Which of the following has least conductivity in aqueous solution

Assertion : In a mixture of ${\text{Cd(II)}}$ and ${\text{Cu(II)}}$, ${\text{(C}}{{\text{d}}^{ + 2}}{\text{)}}$ gets precipitated in presence of $\mathrm{KCN}$ by H2S.

Reason : The stability constant of ${\left[ {{\text{(Cu(CN}}{{\text{)}}_{\text{4}}}} \right]^{ - 3}}$ is greater than ${\left[ {{\text{(Cu(CN}}{{\text{)}}_{\text{4}}}} \right]^{ - 2}}$

The splitting of the $d$ - orbitals of transition metals by a particular complex geometry gives rise to the pattern,

$\begin{array}{r} \overline{d_{x y}}\,\,\overline{d_{y z}}\,\,\overline{d_{x z}} \\ \text { Energy } \uparrow \overline{d_{x^2-y^2}}\,\,\overline{d_{z^2}} \end{array}$

Which one of the following geometries produces the above splitting pattern?

The correct order of ligands arranged in increasing field strength.

The number of isomers possible for square planar complex ${\mathrm{K}_2}\left[ {\mathrm{PdClB}{\mathrm{r}_2}\mathrm{SCN}} \right]$ is:

The number of ions formed when a molecule of ${\mathrm{K}_4}\mathrm{Fe}{\left( {\mathrm{CN}} \right)_6}$ dissociates is:

Potassium ferrocyanide is a

Assertion: $\left[{Fe}({CN})_6\right]^{3-}$ is weakly paramagnetic while $\left[{Fe}({CN})_6\right]^{4-}$ is diamagnetic.

Reason: $\left[{Fe}({CN})_6\right]^{3-}$ has +3 oxidation state while $\left[{Fe}({CN})_6\right]^{4-}$ has +2 oxidation state.

$\left[M a_6\right]^{+2},\left[M b_6\right]^{+2},\left[M c_6\right]^{+2}$ and $\left[M d_6\right]^{+2}$ octahydral complex absorbs wavelengths in the region of red, green, blue and yellow respectively. What is the strongest ligand among $a, b, c$ and $\mathrm{d}$.

Which of the following best describes the nature of $\mathrm{FeSO}_4 \cdot\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4 \cdot 6 \mathrm{H}_2 \mathrm{O}$

A ligand can also be regarded as

Statement I: $\left[\mathrm{Ni}(\mathrm{CO})_4\right]$ is diamagnetic in nature

Statement II: Nickel atom undergoes $\mathrm{sp}^3$ hybridization

Which among the following complexes can named "dichlorido-bis-(ethane-1, 2-diamine) platinum (IV) nitrate" ?

The number of geometrical isomers of $\left[ {\mathrm{Co}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_3}{{\left( {\mathrm{N}{\mathrm{O}_2}} \right)}_3}} \right]$ are:

The correct statements from following are:

A. The strength of anionic ligands can be explained by crystal field theory.

B. Valence bond theory does not give a quantitative interpretation of kinetic stability of coordination compounds.

C. The hybridization involved in formation of $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ complex is dsp ${ }^2$.

D. The number of possible isomer(s) of cis- $\left[\mathrm{PtCl}_2(\mathrm{en})_2\right]^{2+}$ is one

Choose the correct answer from the options given below:

Complex $X$ of composition $Cr{\left( {{H_2}O} \right)_6}C{l_n}$ has a spin only magnetic moment of 3.83 BM. It reacts with $AgN{O_3}$ and shows geometrical isomerism. The IUPAC nomenclature of $X$ is

Which of the following is an organometallic compound?

Assertion: The geometrical isomers of the complex $\left[{M}\left({NH}_3\right)_4 {Cl}_2\right]$ are optically inactive.

Reason: Both geometrical isomers of the complex $\left[{M}\left({NH}_3\right)_4 {Cl}_2\right]$ posses axis of symmetry.

Which of the following complexes are heteroleptic ?

Which of the following sequence is correct regarding field strength of ligands as per spectrochemical series?

Which of the following statements is not correct?

Which statement is not correct in the case of ${\left[ {\mathrm{Co}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_6}} \right]^{3 + }}$ complex?

Statement I: $\left[\mathrm{Co}(\mathrm{en})_2\left(\mathrm{NH}_3\right) \mathrm{Br}\right] \mathrm{SO}_4$ has lower electrical conductivity as compared to $\left[\mathrm{Co}(\mathrm{en})_2\left(\mathrm{NH}_3\right) \mathrm{SO}_4\right] \mathrm{Br}$

Statement II: Both the complexes produce the same number of ions in solution