Co-ordination compounds practice · Mixed difficulty

The ion which exhibits green colour

The correct statement among I to III are :
I. Valence bond theory cannot explain the color exhibited by transition metal complexes.
II. Valence bond theory can predict quantitatively the magnetic properties of transition metal complexes.
III. Valence bond theory cannot distinguish ligands as week and strong field ones.

All ligands are:

The correct IUPAC name for $F{e_4}{\left[ {Fe{{\left( {CN} \right)}_6}} \right]_3}$ is

Strongest field ligand among the following is

IUPAC name of the given compound is ${K_3}\left[ {Cr{{\left( {{C_2}{O_4}} \right)}_3}} \right]$

An octahedral complex is formed when central metal atom undergoes hybridization amongst the….orbitals.

A complex compound in which the oxidation number of a metal is zero, is

The type of isomerism shown by the complex $\left[ {\mathrm{Co}\,\mathrm{C}{\mathrm{l}_\mathrm{2}}\,{{\left( {\mathrm{en}} \right)}_\mathrm{2}}} \right]$ is

Atomic numbers of $\;Cr\,\,\mathrm{and}\,\,Fe$ are respectively 24 and 26. Which of the following is paramagnetic with the spin of the electron?

In sodium tetrafluorooxochromate(….), $\mathrm{N}{\mathrm{a}_3}\left[ {\mathrm{Cr}\left( \mathrm{O} \right){\mathrm{F}_4}} \right]$ the left out place should be filled with which of the following roman numerals?

Which of the following complexes, how many of them are paramagnetic & diamagnetic in nature respectively :-

$\left[{Ni}({CO})_4\right],\left[{Cr}\left({NH}_3\right)_3\left({NO}_2\right)_3\right]$,
$\left[{Ni}\left({NH}_3\right)_3\left({H}_2 {O}\right)_3\right]^{+2},\left[{Co}({OX})_3\right]^{-3}$,
$\left[{Fe}\left({NH}_3\right)_6\right]^{+3},\left[{NiCl}_4\right]^{-2}$

Options are :

Out of the following the metal which forms polynuclear carbonyl is:

A solution of $\mathrm{CuCl}\,\,\mathrm{in}\,\,\mathrm{N}{\mathrm{H}_\mathrm{4}}\mathrm{OH}$ is used to measure the amount of which gas is a sample by simply measuring change in volume?

Why do compounds having similar geometry have different magnetic moment?

Which one of the following will not show geometrical isomerism?

Decreasing order of molar conductivity of the following:
(A) $COC{l_3}.6N{H_3}$ (B) $COC{l_3}.5N{H_3}$ (C) $COC{l_3}.4N{H_3}$ (D) $COC{l_3}.3N{H_3}$ will be

Assertion : On cooling a freezing mixture, colour of the mixture turns to pink from deep blue for a reaction. ${Co}\left({H}_2 {O}\right)_6^{2+}{ }_{(a q)}+4 {Cl}_{(a q)}^{-} \rightleftharpoons$ ${CoCl}_4^{2-}(a q)+6 {H}_2 {O}_{(l)}$.

Reason : Reaction is endothermic so on cooling, the reaction moves to backward direction.

Among the following metal carbonyls, $\mathrm{C} - \mathrm{O}$ bond order is lowest in

Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is:

Which of the following statement is false

Which of the following is not true for ligand metal complex?

Which of the following ligand has lowest ${\mathrm{\Delta }_o}$ value?

In which of the following octahedral complexes of ${\mathrm{Co}}$ (at. No. 27), will be magnitude of ${\Delta _0}$ be the highest?

Which of the following complexes are heteroleptic ?

According to spectrochemical series strongest field ligand among the following is

cis $-\left[\mathrm{PtC}{l}_2\left(\mathrm{NH}_3\right)_2\right]$ is used

Which one of the following species doesn’t have a magnetic moment of 1.73 BM (spin only value)?

Colour of transition metal complexes can be explained by:

Which of the following statement is correct?