Inorganic Chemistry PYQ — Page 9

Identify the coordination complexes in which the central metal ion has $d^4$ configuration.  Choose the correct answer from the options given below :

Match the LIST-I with LIST-II  Choose the correct answer from the options given below :

Which of the following ions is the strongest oxidizing agent? (Atomic Number of $\mathrm{Ce}=58, \mathrm{Eu}=63, \mathrm{~Tb}=65, \mathrm{Lu}=71$ )

The d-orbital electronic configuration of the complex among $\quad\left[\mathrm{Co}(\mathrm{en})_3\right]^{3+}, \quad\left[\mathrm{CoF}_6\right]^{3-}$, $\left[\mathrm{Mn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ and $\left[\mathrm{Zn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ that has the highest CFSE is :

$\mathrm{KMnO}_4$ acts as an oxidising agent in acidic medium. ' X ' is the difference between the oxidation states of Mn in reactant and product. ' Y ' is the number of ' d ' electrons present in the brown red precipitate formed at the end of the acetate ion test with neutral ferric chloride. The value of $\mathrm{X}+\mathrm{Y}$ is ______.

The correct order of $\left[\mathrm{FeF}_6\right]^{3-},\left[\mathrm{CoF}_6\right]^{3-},\left[\mathrm{Ni}(\mathrm{CO})_4\right]$ and $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ complex species based on the number of unpaired electrons present is :

The sum of sigma \((\sigma)\) and pi \((\pi)\) bonds in Hex-1,3-dien-5-yne is _______.

The complex that shows Facial - Meridional isomerism is:

Match List - I with List - II.  Choose the correct answer from the options given below :

The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively: $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{FeF}_6\right]^{3-},\left[\mathrm{CoF}_6\right]^{3-},\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$

Pair of transition metal ions having the same number of unpaired electrons is :

Given below are two statements : Statement I : Nitrogen forms oxides with +1 to +5 oxidation states due to the formation of $\mathrm{p} \pi-\mathrm{p} \pi$ bond with oxygen. Statement II : Nitrogen does not form halides with +5 oxidation state due to the absence of d-orbital in it. In the light of given statements, choose the correct answer from the options given below.

First ionisation enthalpy values of first four group 15 elements are given below. Choose the correct value for the element that is a main component of apatite family :

The large difference between the melting and boiling points of oxygen and sulphur may be explained on the basis of

Match List - I with List - II. \begin{array}{llll} & List - I & & List - II \\(A) & Bronze & (I) &\mathrm{Cu}, \mathrm{Ni} \\(B) & Brass & (II) &\mathrm{Fe}, \mathrm{Cr}, \mathrm{Ni}, \mathrm{C} \\(C) & UK silver coin & (III) &\mathrm{Cu}, \mathrm{Zn} \\(D) & Stainless steel & (IV) &\mathrm{Cu}, \mathrm{Sn}\end{array} Choose the correct answer from the options given below :

Consider the following reactions  $\begin{aligned}<br />& \mathrm{CrO}_2 \mathrm{Cl}_{2(\text { Vapour })}+\mathrm{NaOH} \rightarrow \mathrm{~B}+\mathrm{NaCl}+\mathrm{H}_2 \mathrm{O} \\ & \mathrm{~B}+\mathrm{H}^{+} \rightarrow \mathrm{C}+\mathrm{H}_2 \mathrm{O}<br />\end{aligned}$ The number of terminal ' O ' present in the compound ' C ' is ______.

Match the LIST-I with LIST-II $\begin{array}{|l|l|c|l|}\hline & \begin{array}{c} \text{LIST-I} \\ \text{(Complex/} \\ \text{Species)} \end{array} & & \begin{array}{c} \text{LIST-II} \\ \text{(Shape & magnetic} \\ \text{moment)} \end{array} \\ \hline \text{A.} & {\left[\mathrm{Ni}(\mathrm{CO})_4\right]} & \text{I.} & \text{Tetrahedral, 2.8 BM} \\ \hline \text{B.} & {\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}} & \text{II.} & \text{Square planar, 0 BM} \\ \hline \text{C.} & {\left[\mathrm{NiCl}_4\right]^{2-}} & \text{III.} & \text{Tetrahedral, 0 BM} \\ \hline \text{D.} & {\left[\mathrm{MnBr}_4\right]^{2-}} & \text{IV.} & \text{Tetrahedral, 5.9 BM} \\ \hline \end{array}$ Choose the correct answer from the options given below :

The molecules having square pyramidal geometry are


An octahedral complex having molecular composition Co. $5 \mathrm{NH}_3. \mathrm{Cl}. \mathrm{SO}_4$ has two isomers A and B. The solution of A gives a white precipitate with $\mathrm{AgNO}_3$ solution and the solution of B gives white precipitate with $\mathrm{BaCl}_2$ solution. The type of isomerism exhibited by the complex is,

The number of paramagnetic complex among $\left[\mathrm{FeF}_6\right]^{3-},\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$, $\left[\mathrm{MnCl}_6\right]^{3-}$ and $\left[\mathrm{CoF}_6\right]^{3-}$, which involved $\mathrm{d}^2 \mathrm{sp}^3$ hybridization is ____

Number of stereoisomers possible for the complexes, $\left[\mathrm{CrCl}_3(\mathrm{py})_3\right]$ and $\left[\mathrm{CrCl}_2(\mathrm{ox})_2\right]^{3-}$ are respectively ( $\mathrm{py}=$ pyridine, $\mathrm{ox}=$ oxalate)

A transition metal \((\mathrm{M})\) among \(\mathrm{Mn}, \mathrm{Cr}, \mathrm{Co}\) and Fe has the highest standard electrode potential \(\left(\mathrm{M}^{3+} / \mathrm{M}^{2+}\right)\). It forms a metal complex of the type \(\left[\mathrm{M}(\mathrm{CN})_6\right]^{4-}\). The number of electrons present in the \(\mathrm{e}_{\mathrm{g}}\) orbital of the complex is _________.

Consider the following low-spin complexes $\mathrm{K}_3\left[\mathrm{Co}\left(\mathrm{NO}_2\right)_6\right], \mathrm{K}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]$, $\mathrm{K}_3\left[\mathrm{Fe}(\mathrm{CN})_6\right], \mathrm{Cu} u_2\left[\mathrm{Fe}(\mathrm{CN})_6\right] \text { and } \mathrm{Zn}_2\left[\mathrm{Fe}(\mathrm{CN})_6\right]$ The sum of the spin-only magnetic moment values of complexes having yellow colour is. _____ B.M. (answer in nearest integer)