Co-ordination compounds practice · Mixed difficulty

Which compound is zero valent metal complex?

The IUPAC name of $\left[ {\mathrm{CoCl}\left( {\mathrm{N}{\mathrm{O}_2}} \right){{\left( {\mathrm{en}} \right)}_2}} \right]\mathrm{Cl}$ is:

$\mathrm{Fe}^{3+}$ cation gives a Prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of:

The oxidation state of $\mathrm{Cr}$ in ${\left[ {\mathrm{Cr}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_4}\mathrm{\;C}{\mathrm{l}_2}} \right]^ + }\,\mathrm{is}$

The $d -$electron configurations of $\mathrm{C}{\mathrm{r}^{2 + }},\mathrm{\;M}{\mathrm{n}^{2 + }},\mathrm{\;F}{\mathrm{e}^{2 + }}$ and $\mathrm{C}{\mathrm{o}^{2 + }}$ are ${d^4},{d^5},{d^6}\;and\;{d^7}$ respectively. Which one of the following will exhibit minimum paramagnetic behaviour?
(At. Nos.$\mathrm{Cr} = 24,\mathrm{\;Mn} = 25,\mathrm{\;Fe} = 26,\mathrm{\;Co} = 27$)

A metal complex having composition $\mathrm{Cr}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2 \mathrm{Br}$ has been isolated in two forms $\mathrm{A}$ and $B . A$ reacts with $\mathrm{AgNO}_3$ producing a white precipitate which was soluble in dilute ammonia solution. $B$ reacts with $\mathrm{AgNO}_3$ producing a pale yellow precipitate soluble in concentrated ammonia solution. The formulae of $A$ and $B$ are respectively

The oxidation number of $\mathrm{Fe}$ in $[\mathrm{Fe}(\mathrm{CN})_6]^{4-}, \mathrm{Co}$ in $\left[\mathrm{Co}(\mathrm{NH}_3)_3\left(\mathrm{NO}_2\right)_3\right]$ and $\mathrm{Ni}$ in $[\mathrm{Ni}(\mathrm{CO})_4]$ are respectively

Assertion(A) ${Ni}({CO})_4$ is diamagnetic in nature.

Reason(R) Ni-atom undergoes $s p^3$ hybridization.

$\left[ {\mathrm{Co}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_5}\mathrm{S}{\mathrm{O}_4}} \right]\mathrm{Br\;}\,\,\mathrm{and}\,\,\left[ {\mathrm{Co}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_5}\mathrm{\;Br}} \right]\mathrm{S}{\mathrm{O}_4}$ are a pair of ….. Isomers.

Each metal possesses:

Name the metal $M$ which is extracted on the basis of following reactions,
$4M + 8\mathrm{C}{\mathrm{N}^ - } + 2{\mathrm{H}_2}\mathrm{O} + {\mathrm{O}_2} \to 4{\left[ {M{{\left( {\mathrm{CN}} \right)}_2}} \right]^ - } + 4\mathrm{O}{\mathrm{H}^ - }$
$2{\left[ {M{{\left( {\mathrm{CN}} \right)}_2}} \right]^ - } + \mathrm{Zn} \to {\left[ {\mathrm{Zn}{{\left( {\mathrm{CN}} \right)}_4}} \right]^{2 - }} + 2M$:

Carnallite in solution in water shows the properties of

The oxidation number of $\mathrm{Fe}$ in ${\mathrm{K}_4}\left[ {\mathrm{Fe}{{\left( {\mathrm{CN}} \right)}_6}} \right]\,\mathrm{is}$

Show the coordination number of the metal ion, its oxidation number, the number of electrons in $d -$orbitals and the number of unpaired electrons $d -$orbitals respectively in complex $\left[ {\mathrm{Co}{{\left( {{\mathrm{H}_2}\mathrm{O}} \right)}_4}\mathrm{S}{\mathrm{O}_3}} \right]\mathrm{Cl}.$

$\left[\mathrm{Fe}({en})_2\left({H}_2 {O}\right)_2\right]^{2+}+$ en $\rightarrow$ complex $({X})$. The correct statement about the complex $(X)$ is-

What is the ratio of uncomplexed to complexed $\mathrm{Zn}^{2+}$ ion $\left[\mathrm{Zn}\left(\mathrm{NH}_3\right)_4\right]^{2+}$ is $3 \times 10^9$ ?

Among the following pair of complexes, in which case ${\Delta _0}$ value is higher for the second one

Which of the following does not show optical isomerism?

Assertion: In zieses salt coordination no. of $Pt$ is five.
Reason: Ethene is monodentate ligand.

In the lassigne’s lest for Nitrogen in an organic compound, the Prussian blue colour is obtained due to the formation of

The ligands in anti-cancer drug $cis$-platin are:

Which one of the following has lowest value of paramagnetic behaviour?

The pair of the compounds in which both the metals are in the higher possible oxidation state is

$\pi$ acid ligand among the following is

Estimation of calcium and magnesium is done by

The total number of possible structural isomers of the compound $\left[ {\mathrm{C}{\mathrm{u}^{\mathrm{II}}}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_4}} \right]\left[ {\mathrm{P}{\mathrm{t}^{\mathrm{II}}}\mathrm{C}{\mathrm{l}_4}} \right]$ are:

The IUPAC name of compound ${\mathrm{K}_3}\left[ {\mathrm{Fe}{{\left( {\mathrm{CN}} \right)}_5}\mathrm{NO}} \right]$ is

Among the following pairs of complexes, in which case the $\Delta_0$ value is higher for the first one?

${\left[ {\mathrm{EDTA}} \right]^{4 - }}{\mkern 1mu} \mathrm{is}{\mkern 1mu} {\mkern 1mu} \mathrm{a}$

Which one of the following has largest number of isomers?
(R $=$ alkyl group, en $=$ ethylenediamine)