The geometries of Ni ( CO ) 4 and are Ni(PPh 3 ) 2 Cl 2 :

Tetrahedral and square planar, respectively.

Square planar and tetrahedral, respectively.

Amongst Ni CO 4 , Ni CN 4 2 - and [NiCl 4 ] 2- :

Ni CO 4 and Ni CN 4 2 - are diamagnetic and NiCl 4 2 - is paramagnetic.

Ni CO 4 and NiCl 4 2 - are diamagnetic and Ni CN 4 2 - is paramagnetic.

NiCl 4 2 - and Ni CN 4 2 - are diamagnetic and Ni CO 4 is paramagnetic.

Ni CO 4 is diamagnetic and NiCl 4 2 - and Ni CN 4 2 - are paramagnetic.

Chemistry - Coordination Compounds - Quiz-8

${[{CoCl}_{2} {({NH}_{3})}_{4}]}^{+} + C l^{-} \to [{CoCl}_{3} {({NH}_{3})}_{3}] + {NH}_{3}$
If in the above reaction, only one isomer of the product is obtained. Which of the following statement is true for the initial (reactant) complex :

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Compound is in cis form.
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Compound is in trans form.
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compound is in both (cis and trans) forms.
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Can't be predicted.

Among the following, the electronic configuration that represents the maximum magnetic moment is

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$d^{3}$
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$d^{2}$
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$d^{8}$
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$d^{6}$ (high spin)

The IUPAC name of [ $C r {(e n)}_{3}$ ] $C l_{3}$ is :

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Triethylenediaminechromium (III) chloride
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Tris(ethylenediammine)chromium (II) chloride
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Tris(ethylenediammine)chromium (III) chloride
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Tris(ethylenediamine)chromium (II) chloride

The crystal field stabilization energy (CFSE) for [CoCl₆]^{4 -} is 18000 $c m^{- 1.}$ Therefore, CFSE for ${[C o C l_{4}]}^{2 -}$ will be

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$6000 c m^{- 1}$
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$16000 c m^{- 1}$
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$18000 c m^{- 1}$
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$8000 c m^{- 1}$

Which of the following pairs will show the same magnetic moment ('spin only')?

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${[Cr {(H_{2} O)}_{6}]}^{3 +} and [Fe {(H_{2} O)}_{5} NO]^{2 +}$
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$[Mn {(CN)}_{6}]^{4 -}$ and [Fe(CN)6]3-
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$[Ni {(CO)}_{4}] and [Zn {({NH}_{3})}_{4}]^{2 +}$
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All of these

Choose the incorrect statement

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In ${[Fe {(CN)}_{6}]}^{4 -}$ Fe—C bond length is smaller than Fe—C bond length in ${[Fe {(CN)}_{6}]}^{3 -}$
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The EAN of Fe in ${[Fe {(CN)}_{6}]}^{4 -}$ is 36
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${[Fe {(CN)}_{6}]}^{3 -}$ more stable than ${[Fe {(CN)}_{6}]}^{4 -}$
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${[Fe {(Phen)}_{3}]}^{3 +}$ is more stable than ${[Fe {(Phen)}_{3}]}^{2 +}$

A solution containing 0.319 g of complex ${CrCl}_{3}$ . $6 H_{2} O$ was passed through a cation exchanger and the solution given out was neutralized by 28.5 ml of 0.125 M NaOH. The correct formula of the complex will be [molecular weight of complex = 266.5]

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$[CrCl {(H_{2} O)}_{5}] {Cl}_{2} \cdot H_{2} O$
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$[Cr {(H_{2} O)}_{6}] {Cl}_{3}$
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$[{CrCl}_{2} {(H_{2} O)}_{4}] Cl \cdot H_{2} O$
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All are correct

The oxidation state and effective atomic number of Cr in bis(benzene) chromium are

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0, 36
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3, 35
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2, 36
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2, 35

Consider the following complexes

1. $K_{2} {PtCl}_{6}$

2. ${PtCl}_{4}, 2 {NH}_{3}$

3. ${PtCl}_{4}, 3 {NH}_{3}$

4. ${PtCl}_{4}, 5 {NH}_{3}$

Their electrical conductance in aqueous solution respectively are

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256, 0, 97, 404
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404, 0, 97, 256
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256, 97, 0 ,404
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404, 97, 256, 0

Zero magnetic moment of the octahedral complex $K_{2} [{NiF}_{6}]$ is due to :

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Low spin $d^{6}$ Ni(IV) complex
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Low spin $d^{8}$ Ni(ll) complex
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High spin $d^{8}$ Ni(ll) complex
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High spin $d^{6}$ Ni(IV) complex

Which of the following statements is not correct?

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The complexes ${[{Fe}_{} {(H_{2} O)}_{6}]}^{2 +}$ and ${[Fe ({CN}_{6})]}^{4 -}$ differ in the state of hybridization of iron
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The complexes ${[{Fe}_{} {(H_{2} O)}_{6}]}^{2 +}$ and ${[Fe ({CN}_{6})]}^{4 -}$ differ in the magnetic properties
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iron ion has the same secondary valency in the complexes ${[{Fe}_{} {(H_{2} O)}_{6}]}^{2 +}$ and
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The complex ${[{Fe}_{} {(H_{2} O)}_{6}]}^{2 +}$ and ${[Fe ({CN}_{6})]}^{4 -}$ differ in primary valency of iron

About $[Co {({NH}_{3})}_{6} {Cl}_{2}]$ and $[Co {({NH}_{3})}_{6} {Cl}_{3}]$ , correct match is

$[Co {({NH}_{3})}_{6} {Cl}_{3}]$ $[Co {({NH}_{3})}_{6} {Cl}_{2}]$

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Stability $\to$ More Less
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Magnetism $\to$ Paramagnetic Diamagnetic
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Hybridization $\to$ ${sp}^{3} d^{2}$ $d^{2} {sp}^{3}$
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Complex $\to$ outer orbital inner orbital

IUPAC name of $H_{2} [{PtCl}_{6}]$ is:

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hydrogen hexachloroplatinate (IV)
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dihydrogen hexachloroplatinate (IV)
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hydrogen hexachloroplatinic (IV) acid
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hexachloroplatinic (IV) acid

$[Ni {({PPh}_{3})}_{4}]$ and ${[{NiCl}_{4}]}^{2 -}$ have geometry, hybridization and magnetic moments of the ions respectively

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Tetrahedral, tetrahedral; ${sp}^{3}, {sp}^{3}$ ; O, 2.82
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Tetrahedral, square planar; ${sp}^{3}, {dsp}^{2}$ ; O, 2.82
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Tetrahedral, octahedral; ${sp}^{3}, d^{2} {sp}^{3}$ ; 2.82, O
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Square planar, tetrahedral; ${dsp}^{2}, {sp}^{3}$ ; 2.82, 2.82

The geometries of $Ni {(CO)}_{4}$ and are Ni(PPh₃)₂Cl₂ :

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Both square planar.
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Tetrahedral and square planar, respectively.
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Both tetrahedral.
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Square planar and tetrahedral, respectively.

Which one of the following high spin complexes has the largest crystal field stabilization energy?

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${[Cr {(H_{2} O)}_{6}]}^{2 +}$
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${[Cr {(H_{2} O)}_{6}]}^{3 +}$
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${[Mn {(H_{2} O)}_{6}]}^{2 +}$
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${[Mn {(H_{2} O)}_{6}]}^{3 +}$

A coloured complex, among the following, according to Crystal Field Theory (CFT) is

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${[Ti {(H_{2} O)}_{5}]}^{4 +}$
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${[Cr {({NH}_{3})}_{6}]}^{3 +}$
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$K [V {(F)}_{6}]$
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${({NH}_{4})}_{2} [{TiCl}_{6}]$

$Among (i) [C 0 {({NH}_{3})}_{6}] {CI}_{3}, (ii) [Ni {({NH}_{3})}_{6}] {CI}_{2}, (iii) [Cr {(H_{2} O)}_{6}] {CI}_{3}, (iv) [Fe {(H_{2} O)}_{6}] {CI}_{2}, the diamagnetic complex is$

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ii
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iii
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iv
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i

For which of the following complexes IUPAC names is not correctly assigned?

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$Na [Pt ({NH}_{3}) BrCl ({NO}_{2})]$ -Sodium amminebromidochlorido nitrito-N-pIatinate(II)
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$[{CuCl}_{2} {(O = C {({NH}_{2})}_{2})}_{2}]$ -Dichlorobis (dicarboxido tetraamine) copper (II)
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${[{PtCl}_{3} (η^{2} - C_{2} H_{4})]}^{-}$ —Trichlorido ( $η^{2}$ — ethylene) platinate(ll) ion
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${[Fe (Cl) {(CN)}_{4} (O_{2})]}^{4 -}$ —Chloridotetracynosuperoxoferrate (II) ion

The Crystal Field Stabilization Energy (CFSE) and the spin-only magnetic moment in Bohr Magneton (BM) for the complex $K_{3} [Fe {(CN)}_{6}]$ are, respectively,

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$0.0 ∆_{0} and \sqrt{35} BM$
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$- 2.0 ∆_{0} and \sqrt{3} BM$
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$- 0.4 ∆_{0} and \sqrt{24} BM$
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$- 2.4 ∆_{0} and \sqrt{0} BM$

${Zn}^{2 +} + 4 {NH}_{3} ⇌ {[Zn {({NH}_{3})}_{4}]}^{2 +}$ . the concentration of free ${Zn}^{2 +}$ ions in a solution of the complex ion ${[Zn {({NH}_{3})}_{4}]}^{2 +}$ can be increased significantly by the addition of

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$H_{2} O$
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HCl(aq)
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${NH}_{3} (aq)$
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${NH}_{4} Cl (aq)$

Other than the X-ray diffractions, how could be the following pairs of isomers be distinguished from one another by;

$[Cr {({NH}_{3})}_{6}] [Cr {({NO}_{2})}_{6}] and$ $[Cr {({NH}_{3})}_{4} {({NO}_{2})}_{2}] [Cr {({NH}_{3})}_{2} {({NO}_{2})}_{4}]$

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Cryoscopic method
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Measurement of molar conductance
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Measuring magnetic moments
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Observing their colors

The hybridizations of $[Ni {(CO)}_{4}] and {[Cr {(H_{2} O)}_{6}]}^{+ 3}$ , respectively, are :

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${sp}^{3} and d^{3} {sp}^{2}$
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$d {sp}^{2} and d^{2} {sp}^{3}$
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${sp}^{3} and d^{2} {sp}^{3}$
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$d {sp}^{2} and s p^{3} d^{2}$

Which of the following is true about the complex $[{PtCl}_{2} ({NH}_{3}) {({OH}_{2})}_{}]$ ; [Atomic number of Pt = 78]
I. It will have two geometrical isomeric forms, cis and trans

II. The hybridization state of Pt(ll) is ${sp}^{3}$

III. It is a square planar complex

IV. It is a diamagnetic complex

V. It can show hydrate isomerism

VI. It is a tetrahedral complex

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I, III, IV
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II, IV, V
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II, V, IV
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I, V, IV

A metal ion has $d^{6}$ configuration. In octahedral complex entity of low spin, the number of electrons present in $e_{g}$ set of orbitals will be

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6
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4
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0
0%

2

Amongst $Ni {(CO)}_{4}$ , ${[Ni {(CN)}_{4}]}^{2 -}$ and [NiCl₄]^2- :

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$Ni {(CO)}_{4}$ and ${[{NiCl}_{4}]}^{2 -}$ are diamagnetic and ${[Ni {(CN)}_{4}]}^{2 -}$ is paramagnetic.
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${[{NiCl}_{4}]}^{2 -}$ and ${[Ni {(CN)}_{4}]}^{2 -}$ are diamagnetic and $Ni {(CO)}_{4}$ is paramagnetic.
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$Ni {(CO)}_{4}$ and ${[Ni {(CN)}_{4}]}^{2 -}$ are diamagnetic and ${[{NiCl}_{4}]}^{2 -}$ is paramagnetic.
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$Ni {(CO)}_{4}$ is diamagnetic and ${[{NiCl}_{4}]}^{2 -}$ and ${[Ni {(CN)}_{4}]}^{2 -}$ are paramagnetic.

Red precipitate is obtained when ethanol solution of dimethylglyoxime is added to ammoniacal Ni(II).
Which of the following statements is not true ?

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Complex has symmetrical H-bonding.
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Red complex has a tetrahedral geometry.
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Dimethylglyoxime functions as bidentate ligand.
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Red complex has a square planar geometry.

which of the following statements are correct?

a. ${[Ni {(H_{2} O)}_{6}]}^{2 +}$ and ${[Ni {({NH}_{3})}_{6}]}^{2 +}$ have the different value of CFSE

b. ${[Ni {(H_{2} O)}_{6}]}^{2 +}$ and ${[Ni {({NH}_{3})}_{6}]}^{2 +}$ have the same value of the magnetic moment

c. ${[Ni {(H_{2} O)}_{6}]}^{2 +}$ and ${[Ni {({NH}_{3})}_{6}]}^{2 +}$ have the same hybridization of nickel

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a & b only
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All of these
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a & c only
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b & c only

Which is the correct electronic configuration for the complex ${[Ni {({NH}_{3})}_{6}]}^{2 +}$ ?

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$t_{2 g}^{4} e_{g}^{2}$
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$t_{2 g}^{6} e_{g}^{2}$
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$t_{2 g}^{7} e_{g}^{1}$
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$t_{2 g}^{4} e_{g}^{4}$

0.001 mole of $[Co {({NH}_{3})}_{5} ({NO}_{3}) \cdot ({SO}_{4})]$ was passed through a cation exchanger and the acid coming out of it required 20 ml of 0.1 M NaOH for neutralization. Hence, the complex is

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$[Co {({NH}_{3})}_{5} {SO}_{4}] {NO}_{3}$
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$[Co {({NH}_{3})}_{5} (N O_{3})] {SO}_{4}$
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$[Co {({NH}_{3})}_{5} {SO}_{4}] {NO}_{3} {SO}_{4}$
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All of these

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Practice Chemistry Quiz Questions and Answers

0:0:1

Practice Chemistry Quiz Questions and Answers

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