Coordination Compounds — JEE Main PYQs

Which of the following facts about the complex $[\mathrm{Cr}({\mathrm{NH}}_3{)}_6]{\mathrm{Cl}}_3$ is wrong ?

The magnetic moment (spin only) of ${\left[{\mathrm{NiCl}}_4\right]}^{2-}$ is

A solution containing 2.675 g of ${\mathrm{CoCl}}_3.6{\mathrm{NH}}_3$ (molar mass $=267.5\mathrm{g}{\mathrm{mol}}^{-1}$ ) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of ${\mathrm{AgNO}}_3$ to give 4.78 g of AgCl …

Which one of the following has an optical isomer?
(en = ethylenediamine)

Which of the following has an optical isomer ?

Which of the following pairs represents linkage isomers ?

The coordination number and the oxidation state of the element ' E ' in the complex $\left[\mathrm{E}(\mathrm{en}{)}_2\left({\mathrm{C}}_2{\mathrm{O}}_4\right)\right]{\mathrm{NO}}_2$ (where (en) is ethylene diamine) are, respectively,

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

Which one of the following has a square planar geometry?

The IUPAC name for the complex $\left[\mathrm{Co}\left({\mathrm{NO}}_2\right){\left({\mathrm{NH}}_3\right)}_5\right]{\mathrm{Cl}}_2$ is

Nickel $(Z=28)$ combines with a uninegative monodentate ligand $X^{-}$to form a paramagnetic complex ${\left[{\mathrm{NiX}}_4\right]}^{2-}$. The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively

In $\mathrm{Fe}(\mathrm{CO}{)}_5$, the $\mathrm{Fe}-\mathrm{C}$ bond possesses

How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a ${\mathrm{Ca}}^{2+}$ ion?

The oxidation state of Cr in ${\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_4{\mathrm{Cl}}_2\right]}^{+}$ is

The IUPAC name of the coordination compound ${\mathrm{K}}_3\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]$ is

Which of the following compounds shows optical isomerism?

Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour?
(At. No. $\mathrm{Cr}=24,\mathrm{Mn}=25,\mathrm{Fe}=26,\mathrm{Co}=27$)

Among the properties (a) reducing (b) oxidising (c) complexing, the set of properties shown by ${\mathrm{CN}}^{-}$ion towards metal species is

The coordination number of central metal atom in a complex is determined by

Which one of the following complexes in an outer orbital complex?

Coordination compound have great importance in biological systems. In this context which of the following statements is incorrect?

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