Coordination Compounds · Chemistry · KCET
MCQ (Single Correct Answer)
| List-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 planar |
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 $\text{M}-\text{C}$ $\pi$ bond is formed by the donation of a pair of electrons from a filled d-orbital of metal into the vacant antibonding $\pi^*$ orbital of carbon monoxide.
In the light of the above statements, choose the correct answer from the options given below:
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 $\left[\mathrm{NiCl}_4\right]^{2-}$ ?
(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) It is a high spin complex
(e) The complex is paramagnetic
$$ \text { Which formula and its name combination is incorrect? } $$
$$ \text { In the complex ion }\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-} \text {, the co-ordination number of } \mathrm{Fe} \text { is } $$
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 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. It is a high spin complex.
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 formed.
I. $$\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{en}\right]^{2+}(a q)$$ - pale blue
II. $$\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_2(\mathrm{en})_2\right]^{2+}(\mathrm{aq})$$ - blue/purple
III. $$\left[\mathrm{Ni}(\mathrm{en})_3\right]^{2+}(\mathrm{aq})$$ - violet
The wavelength in $$\mathrm{nm}$$ of light absorbed in case of I and III are respectively
Which of the following is an organometallic compound
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 formula and name combination is incorrect?
Which of the following system in an octahedral complex has maximum unpaired electrons?
The correct IUPAC name of cis-platin is
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 complex hexamineplatinum(IV)chloride will give _____ number of ions on ionisation.
For the crystal field splitting in octahedral complexes,
The IUPAC name of $$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{CO}_3\right)\right] \mathrm{Cl}$$ is
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) $$\mathrm{K}_2\left[\mathrm{Zn}(\mathrm{OH})_4\right]$$
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 $$\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$$ 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
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
Which among the following is the strongest ligand?
The formula of pentaaquanitratochromium (III) nitrate is,