Co-ordination compounds practice · Mixed difficulty

The coordination number of cobalt in $\left[ {\mathrm{Co}{{\left( {\mathrm{en}} \right)}_2}\mathrm{B}{\mathrm{r}_2}} \right]\mathrm{C}{\mathrm{l}_2}$ is:

Which of the following are false about $\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right] \mathrm{SO}_4$ ?

I. It is paramagnetic with one unpaired electron in the $d$-subshell.

II. Its aqueous solution cannot conduct electricity.

III. It gives white $\mathrm{BaCl}_2$ solution.

IV. It is a square planar complex.

Choose the correct option.

Which of the following do not Obeys Sidwick's rule of EAN

Assertion : $\mathrm{AgI}$ is coloured while $\mathrm{AgF}$ is colourless.

Reason : Unpaired ${{\text{e}}^ - }$ is present in $\mathrm{AgI}$

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

Which of the following will not show geometrical isomerism?

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.$\mathrm{Cr} = 24,\mathrm{\;Mn} = 25,\mathrm{\;Fe} = 26,\mathrm{\;Co} = 27$)

Which complex compound obeys 18-electron rule?

The number of ions given by $\mathrm{K}\left[ {\mathrm{Pt}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_5}\mathrm{C}{\mathrm{l}_5}} \right]$ in aqueous solution is:

Which of the following ions forms most stable complex compound?

The coordination number and oxidation state of central atom for $\left[{TiF}_9\right]^{6-}$ are respectively

Which of the following complex does not show geometrical isomerism?

Mercuric chloride is soluble in ${KI}$ solution due to:

Which of the following does not show optical isomerism?

The tetrahedral complexes have coordination number

Which of the following coordination entities should be expected to absorb light of lowest frequency?

Which complex is likely to show optical activity?

Which of the following is a square planar complex?

The tetrahedral complexes have coordination number

When an aqueous solution of copper (II) sulphate is saturated with ammonia, the blue compound crystallises on evaporation. The formula of this blue compound is:

The CFSE for octahedral ${\left[ {CoC{l_6}} \right]^{4 + }}$ is 18,000 $c{m^{ - 1}}$. The CFSE for tetrahedral ${\left[ {COC{l_4}} \right]^{2 - }}$ will be

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

Consider the following statements: According to the Werner's theory.
(1) Ligands are connected to the central metal ions by ionic bonds.
(2) Secondary valencies have directional properties
(3) Secondary valencies are non-ionisable
The correct statements are:

Assertion :- Ethanol cannot show position isomerism.

Reason :- Ethanol cannot show isomerism.

Which of the following 0.1 M complex compound solutions will have the minimum electrical conductivity?

Given below are two statements:

Statement (I): A solution of $\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ is green in colour.

Statement (II): A solution of $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ is colourless.

In the light of the above statements, choose the most appropriate answer from the options given below:

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

Which of the following has the highest molar conductivity in solution?

Assertion: $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$ is more paramagnetic than $\left[\mathrm{FeF}_6\right]^{3-}$.

Reason: $[\mathrm{FeF} 6]^{3-}$ has more number of unpaired electrons.

Which is high spin complex?