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Coordination Compounds — JEE Main & Advanced NSEC PYQs

33 previous year questions from Coordination Compounds with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

33 questionsNSECSolutions on every page
1

How many isomers are possible for complex [ Co ( ox )₂ Cl ₂ ]⁺ ?

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Which one of the following reactions is correct?

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Which of the following statements about ammonium cerium(IV) nitrate, ( NH ₄ )₂ [ Ce ( NO ₃ )₆ ] is false?

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Cyanide ion is a very good complexing agent and also functions as a reducing agent. Hence many cyanide complexes of metals are known. Addition of an aqueous solution of KCN to a so

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Which of the complexes has the magnetic moment of 3.87 B.M.?

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IUPAC name of the complex ion [ CrCl ₂( ox )₂ ]³⁻ is

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The type/s of isomerism that Co ( NH ₃ )₄ Br ₂ Cl can exhibit is/are

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Metal 'M' forms a carbonyl compound in which it is present in its lower valance state. Which of the following bonding is possible in this metal carbonyl?

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The complex ion that does not have d electrons in the metal atom is

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The complex [ M ( en )( Br )₂( Cl )₂ ] has two optical isomers. Their configurations can be represented as

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The observed effective magnetic moment of two octahedral complexes, K ₄ [ Mn ( CN )₆ ] .3 H ₂ O ( X ) and K ₄ [ Mn ( SCN )₆ ]( Y ) are 2.18 BM and 6.06 BM , respectively. Which of

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The IUPAC name of the complex [ Pt ( en ) ( NH ₃ )( Cl )₂( ONO ) ] [ Ag ( CN )₂ ] is

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The C - O bond length is the shortest in

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The spin-only magnetic moments of [ Fe ( NH ₃ )₆ ]³⁺ and [ FeF ₆ ]³⁻ (in units of BM ) respectively are

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The number of stereoisomers is maximum for

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MnCl ₂ .4 H ₂ O (molar mass =198 ~g ~mol ⁻¹ ) when dissolved in water forms a complex of Mn ²⁺ . An aqueous solution containing 0.400 g of MnCl ₂ 4 H ₂ O was passed through a colum

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The alkene ligand ( - C ₂ R ₄ ) is both a ' ' donor and a ' ' acceptor, similar to the CO ligand in metal carbonyls, and exhibits synergic bonding with metals. Correct order of C -

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Among the following, the complex ion/s that will have a magnetic moment of 2.82 B.M. is /are I. [ Ni ( CO )₄ ] II. [ NiCl ₄ ]²⁻ III. [ Ni ( H ₂ O )₆ ]²⁺ IV. [ Ni ( CN )₄ ]²⁻

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The correct order of CFSE among [ Zn ( NH ₃ )₄ ]²⁺, [ Co ( NH ₃ )₆ ]²⁺ and [ Co ( NH ₃ )₆ ]³⁺ is

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In the gaseous state of Fe ( CO )₅ , the 'd' orbital that would participate in hybridization is

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The correct IUPAC name of the compound, [ Pt ( py )₄ ] [ Pt ( Br )₄ ] is

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If Ni ²⁺ is replaced by Pt ²⁺ in the complex ion [ NiCl ₂ Br ₂ ]²⁻ , which of the following would change? I. Magnetic moment II. Geometry III. Geometrical isomerism IV. Optical iso

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The correct order of CFSE of the following complex ions is [ Zn ( NH ₃ )₄ ]²⁺, [ Co ( NH ₃ )₆ ]²⁺, [ Co ( NH ₃ )₆ ]³⁺, [ Ir ( NH ₃ )₆ ]³⁺

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The number of stereoisomers is maximum for ( ox = C ₂ O ₄ ²⁻ )

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The number of all the possible geometrical isomers for trigonal bipyramidal OsO ₂ ~F ₃⁺ cation is:

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The correct IUPAC name for the complex [ Au ( en )₂ ( H ₂ O )₂ ] [ Au ( ox )₃ ] is ( en = ethylenediamine and ox = oxalate )

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The correct order for the wavelength of absorption in the following complex ions is

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Using different reaction conditions nickel reacts with (p) Cl ⁻,(q) CN ⁻,(r) CO and (s) small amount of Al. Choose incorrect statement.

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The correct IUPAC name of potassium permanganate is:

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The ligand with which the homoleptic octahedral complex of Co ³⁺ will be most stable is:

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The cobalt complexes (I) and (II) given below are examples of

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The magnetic moment (in units of BM) of copper in [ Cu ( H ₂ O )₄ ]²⁺ and [ Cu ( NH ₃ )₄ ]²⁺ respectively is:

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Crystalline iron(III) nitrate nonahydrate, Fe ( NO ₃ )₃ 9 H ₂ O , has a very pale violet colour. When added to water, the crystals dissolve to form a brown solution. Treatment of t

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