Coordination Compounds

Which of the following is the most stable complex ion?

How many ions per molecule are produced from the complex $[\text{Co(NH}_3\text{)}_6]\text{Cl}_2$ in solution?

Given below are two statements:Statement-I: The $\text{M}-\text{C}$ $\sigma$ bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant d-orbital of the metal.Statement-II: The $\text{M}-\text{C}$ $\pi$ bo...

Match List-I with List-IIList-I (Complex)List-II (Geometry)(a)$[\text{Co(NH}_3\text{)}_6]^{3+}$(i)Trigonal bipyramidal(b)$[\text{NiCl}_4]^{2-}$(ii)Octahedral(c)$[\text{Ni(CN)}_4]^{2-}$(iii)Tetrahedral(d)$[\text{Fe(CO)}_5]$(iv)Square planarC...

Which of the following statements are true about $\left[\mathrm{NiCl}_4\right]^{2-}$ ?
(a) The complex has tetrahedral geometry
(b) Co-ordination number of Ni is 2 and oxidation state is +4
(c) The complex is $\mathrm{sp}^3$ hybridised
(d) ...

\(\text { In the complex ion }\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-} \text {, the co-ordination number of } \mathrm{Fe} \text { is }\)

\(\text { Which formula and its name combination is incorrect? }\)

A ligand which has two different donor atoms and either of the two ligates with the central metal atom/ion in the complex is called ___________

Which of the following statements are true about $\left[\mathrm{CoF}_6\right]^{3-}$ ion ?
I. The complex has octahedral geometry.
II. Coordination number of Co is 3 and oxidation state is +6 .
III. The complex is $s p^3 d^2$ hybridised.
IV....

On treating 100 mL of 0.1 M aqueous solution of the complex $\mathrm{CrCl}_3 \cdot 6 \mathrm{H}_2 \mathrm{O}$ with excess of $\mathrm{AgNO}_3, 2.86 \mathrm{~g}$ of AgCl was obtained. The complex is

The complex compounds $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{SO}_4\right] \mathrm{Br}$ and $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Br}\right] \mathrm{SO}_4$ are

Which of the following system in an octahedral complex has maximum unpaired electrons?

Which formula and name combination is incorrect?

When \(\mathrm{FeCl}_3\) is added to excess of hot water gives a sol '\(X\)'. When \(\mathrm{FeCl}_3\) is added to \(\mathrm{NaOH}(a q)\) solution, gives sol '\(Y\)'
\(X\) and \(Y\) formed in the above processes respectively are

Which of the following is an organometallic compound

If a didentate ligand ethane-1, 2-diamine is progressively added in the molar ratio en : Ni :: 1: 1, 2 : 1, 3 : 1 to \(\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\) aq solution, following co-ordination entities are f...

The complex hexamineplatinum(IV)chloride will give _____ number of ions on ionisation.

Crystal field splitting energy (CFSE) for \(\left[\mathrm{CoCl}_6\right]^{4-}\) is \(18000 \mathrm{~cm}^{-1}\). The crystal field splitting energy (CFSE) for \(\left[\mathrm{CoCl}_4\right]^{2-}\) will be

The correct IUPAC name of cis-platin is

For the crystal field splitting in octahedral complexes,

Homoleptic complexes among the following are
(A) \(\mathrm{K}_3\left[\mathrm{Al}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]\)
(B) \(\left[\mathrm{CoCl}_2(\mathrm{en})_2\right]^{+}\)
(C) $$\mathrm{K}_2\left[\mathrm{Zn}(\mathrm{OH})_4\rig...

The IUPAC name of \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{CO}_3\right)\right] \mathrm{Cl}\) is

The correct order for wavelengths of light absorbed in the complex ions \(\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\) and $$\left[\mathrm{Co}(\mathrm{CN})_6\right]^...

Number of stereoisomers exhibited by \(\left[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2\right]^{+}\) is

Give the IUPAC name of \(\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_4\right]\left[\mathrm{Pt} \mathrm{Cl}_4\right]\) is

The coordination number of \(\mathrm{Fe}\) and \(\mathrm{Co}\) in the complex ions, \(\left.\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}\) and \(\left[\mathrm{Co}(\mathrm{SCN})_4\right]^{2-}\) are respectively

The formula of pentaaquanitratochromium (III) nitrate is,

Which among the following is the strongest ligand?

The IUPAC name of $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}\left(\mathrm{NO}_2\right)\right] \mathrm{Cl}$ is

Square planar complex of the type $M_{\text {AXBL }}$ (where $A, B, X$ and $L$ ) are unidenate ligands shows following set of isomers

The coordination number and the oxidation state of the. element ' $M$ ' in the complex $\left[\mathrm{M}(e n)_2\left(\mathrm{C}_2 \mathrm{O}_4\right)\right] \mathrm{NO}_2$ {where (en) is ethan1, 2-diamine) are respectively

According to crystal field theory, the $M-L$ bond in a complex is