[Co(NH 3 ) 4 (NO 2 ) 2 ]Cl exhibits:

Linkage isomerism, ionization isomerism and geometrical isomerism .

Linkage isomerism, ionization isomerism and optical isomerism.

Ionisation isomerism, geometrical isomerism and optical isomerism.

Linkage isomerism, geometrical isomerism and optical isomerism.

Chemistry - Coordination Compounds - Quiz-3

Correct increasing order for the wavelengths of absorption in the visible region for the complexes of Co³⁺ is :

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$[Co {(en)}_{3}]^{3 +}$ , $[Co {({NH}_{3})}_{6}]^{3 +}$ , $[Co {(H_{2} O)}_{6}]^{3 +}$
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$[Co {(H_{2} O)}_{6}]^{3 +}$ , $[Co {(en)}_{3}]^{3 +}$ , $[Co {({NH}_{3})}_{6}]^{3 +}$
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$[Co {(H_{2} O)}_{6}]^{3 +}$ , $[Co {({NH}_{3})}_{6}]^{3 +}$ , $[Co {(en)}_{3}]^{3 +}$
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$[Co {({NH}_{3})}_{6}]^{3 +}$ , $[Co {(en)}_{3}]^{3 +}$ , $[Co {(H_{2} O)}_{6}]^{3 +}$

Jahn-Teller effect is not observed in high spin complexes of

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d⁷
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d⁸
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d⁴
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d⁹

Which of the following has longest C-O bond length? (Free C-O bond length in CO is

1.128 Å.)

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[Co(СО)₄]^-
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[Fe(CO)₄]^2-
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[Mn(CO)₆]⁺
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Ni(CO)₄

Which of the following statements is false?

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Ca²⁺ ions are important in blood clotting
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Ca²⁺ ions are not important in maintaining the regular beating of the heart
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Mg²⁺ ions are important in the green parts of plants
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Mg²⁺ ions form a complex with ATP

The correct statement, among the following, about $[Co {(CN)}_{6}]^{3 -}$ is

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It has no unpaired electrons and will be in a low-spin configuration.
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It has four unpaired electrons and will be in a low-spin configuration.
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It has four unpaired electrons and will be in a high-spin configuration.
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It has no unpaired electrons and will be in a high-spin configuration.

The total number of possible isomers for the complex [Co(en)₂Cl₂]Cl are
[en-ethylenediamine]

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2
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1
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3
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4

The hybridisation of Ni in the complex [Ni(CN)₄]^2- is
(Atomic number of Ni = 28)

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dsp²
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sp³
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d²sp²
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d²sp³

The sum of coordination number and oxidation number of the metal M in the complex M(en)₂(C₂O₄)]Cl (where, en is ethylenediamine) is :

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9
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6
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7
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8

The name of complex ion, [Fe(CN)₆]^3- is :-

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hexacyanoiron (III) ion
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hexacyanitoferrate (III) ion
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tricyanoferrate (III) ion
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hexacyanidoferrate (III)ion

Among the following complexes, the one which shows zero crystal field stabilisation

energy (CFSE) is:-

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[Mn(H₂O)6]³⁺
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[Fe(H₂O)6]³⁺
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[Co(H₂O)6]²⁺
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[Co(H₂O)6]³⁺

The complex that is used as an anticancer agent is :

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mer-[Co(NH₃)₃Cl₃
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cis-[PtCl₂(NH₃)₂]
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cis-K₂[PtCl₂ Br₂]
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Na₂CoCl₄

A magnetic moment of 1.73 BM will be shown by one among the following

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[Cu(NH₃)₄]²⁺
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[Ni(CN)₄]^2-
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TiCl₄
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[CoCl₆]^4-

Which one of the following is an outer orbital complex and exhibits paramagnetic

behaviour?

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[Ni(NH₃)₆]²⁺
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[Zn(NH₃)₆]²⁺
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[Cr(NH₃)₆]³⁺
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[Co(NH₃)₆]³⁺

The d-electron configurations of Cr²⁺, Mn²⁺, Fe²⁺ and CO²⁺ are d⁴, d⁵, d⁶ and d⁷

respectively. Which one of the following will exhibit minimum paramagnetic behaviour?

(At. no. Cr = 24, Mn =25, Fe=26, CO=27)

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[Fe(H₂O)₆]²⁺
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[Co(H₂O)₆]²⁺
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[Cr(H₂O)₆]²⁺
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[Mn(H₂O)₆]²⁺

Of the following complex ions, the diamagnetic complex is

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[Ni(CN)₄]^2-
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[CuCl₄]^2-
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[CoF₆]^3-
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[NiCl₄]^2-

The complexes [CO(NH₃)₆][Cr(CN)₆] and [Cr(NH₃)₆][Co(CN)₆] exhibit

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lonisation isomerism
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Coordination isomerism
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Geometrical isomerism
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Linkage isomerism

The complex, [Pt(Py)(NH₃)BrCl] will have how many geometrical isomers?

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4
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0
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2
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3

The complex, among the following, that does not show optical isomerism is
(en-ethylenediamine)

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[Co(en)₂Cl₂]⁺
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[Co(NH₃)₃Cl₃]
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[Co(en)Cl₂(NH₃)₂]⁺
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[Co(en)₃]³⁺

Which of the following complex ions is expected to absorb visible light?

(At. no. Zn =30, Sc =21, Ti =22, Cr=24)

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[Sc(H₂O)₃(NH₃)₃]³⁺
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[Ti(en)₂(NH₃)₂]⁴⁺
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[Cr(NH₃)₆]³⁺
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[Zn(NH₃)₆]²⁺

Which of the following complexes exhibits the highest paramagnetic behaviour?

where gly = glycine, en = ethylenediamine and bpy = bipyridyl moieties

(At no : Ti = 22, V = 23, Fe= 26, Co = 27)

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[V(gly)₂ (OH)₂(NH₃)₂]⁺
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[Fe(en)(bpy)NH₃)₂]²⁺
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[Co(OX)₂(OH)₂]^-
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[Ti(NH₃)₆]³⁺

Which of the following will give a pair of enantiomorphs?

(en =NH₂CH₂CH₂NH₂)

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[Co(NH₃)4Cl₂]NO₂
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[Cr(NH₃)₆][Co(CN)₆]
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[Co(en)₂Cl₂]CI
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[Pt(NH₃)₄][PtCl₆ ]

Copper sulphate dissolves in excess of KCN to give :

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CuCN
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[Cu(CN)₄]^3-
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[Cu(CN₄]^2-
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Cu(CN)₂

[Co(NH₃)₄(NO₂)₂]Cl exhibits:

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Linkage isomerism, ionization isomerism and optical isomerism.
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Linkage isomerism, ionization isomerism and geometrical isomerism .
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Ionisation isomerism, geometrical isomerism and optical isomerism.
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Linkage isomerism, geometrical isomerism and optical isomerism.

Ammonia forms the complex ${[Cu ({NH}_{3})_{4}]}^{2 +}$ with copper ions in alkaline solution but not in acidic solution . The reason for this is :

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() In alkaline solution $Cu (OH)_{2}$ is precipitated which is soluble in excess of alkali
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() Copper hydroxide is amphoteric substance
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() In acidic solution hydration protects ${Cu}^{2 +}$ ions
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() In acidic solution protons are coordinated with ammonia molecules forming ${NH}_{4}^{+}$ ions

Which of the following is an oxidizing agent?

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$Mn (CO)_{5}$
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$Fe (CO)_{5}$
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${Mn}_{2} (CO)_{10}$
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${Fe}_{2} (CO)_{9}$

The magnetic moment of a complex ion is 2.83 BM. The complex ion is

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() ${[V (H_{2} O)_{6}]}^{3 +}$
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() ${[Cr (H_{2} O)_{6}]}^{3 +}$
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() ${[Cu (CN)_{4}]}^{2 -}$
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() ${[{MnCl}_{4}]}^{2 -}$

The electronic arrangement of metal atom/ionic octahedral complex with $d^{4}$ configuration , if $∆_{0}$ < pairing energy is

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$t_{2 g}^{4} e_{g}^{0}$
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$e_{g}^{4} t_{2 g}^{0}$
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$t_{2 g}^{3} e_{g}^{1}$
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$e_{g}^{2} t_{2 g}^{2}$

A compound, among the following, that gives a pair of enantiomorphs is
(en = NH₂ CH₂CH₂ NH₂)

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$[C o (N H_{3})_{4} C l_{2}] N O_{2}$
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$[C r (N H_{3})_{6}] [C o (C N)_{6}]$
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$[C o (e n)_{2} C l_{2}] C l$
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$[P t (N H_{3})_{4}] [P t C l_{6}]$

Which of the following complex compound(s) is/are paramagnetic and low spin?

(I) $K_{3} [Fe (CN)_{6}]$

(II) ${[Ni (CO)_{4}]}^{0}$

(III) ${[Cr ({NH}_{3})_{6}]}^{3 +}$

(IV) ${[Mn (CN)_{6}]}^{4 -}$

Choose the correct code :

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I only
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II and III
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I and IV
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IV only

Among the following pairs of complexes , in which case the $∆_{0}$ value is higher fir the first one ?

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${[Co ({NH}_{3})_{6}]}^{3 +} and {[Co (CN)_{6}]}^{3 -}$
(2) ${[{CoF}_{6}]}^{3 -} and {[Co ({NH}_{3})_{6}]}^{3 +}$
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2
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${[Co (H_{2} O)_{6}]}^{2 +} and {[Co (H_{2} o)_{6}]}^{3 +}$
(4) ${[Rh (H_{2} O)_{6}]}^{3 +} and {[Co (H_{2} O)_{6}]}^{3 +}$
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4

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Practice Chemistry Quiz Questions and Answers

0:0:1

Practice Chemistry Quiz Questions and Answers

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