12th Class Chemistry Coordination Chemistry Question Bank

done 12th CBSE Chemistry Coordination Chemistry

• question_answer1) What are complex compounds?

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• question_answer2)   Name a vital coordination compound of magnesium.

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• question_answer3)   Vitamin is a coordination compound of which metal?

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• question_answer4)   Which coordination compound of iron is present in biological systems?

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• question_answer5)   What is primary valency of a metal?

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• question_answer6)   Explain secondary valency of a metal?

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• question_answer7)   Define coordination polyhedra.

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• question_answer8)   What are coordination entities?

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• question_answer9)   What are ligands?

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• question_answer10)   Name a polydentate ligand.

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• question_answer11)   Define ambidentate ligand with example.

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• question_answer12)   What do you mean by the term coordination number?

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• question_answer13)   What is coordination sphere?

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• question_answer14)   Define the term isomers of coordination compounds.

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• question_answer15)   What are stereoisomer's of coordination compounds?

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• question_answer16)   What do you mean by facial and meridional isomers?

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• question_answer17)   What are enantiomers?

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• question_answer18)   Define chiral complexes.

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• question_answer19)   Give an example of octahedral complex which shows optical isomerism.

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• question_answer20)   Which type of isomerism is shown by and.

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• question_answer21)   Name the isomerism shown by the complex .

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• question_answer22)   Name the isomerism arising out of interchange of ligands between coordination entities.

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• question_answer23)   Explain inner orbital and outer orbital complexes.

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• question_answer24)   What are low spin (or spin paired) and high spin (spin free) complexes?

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• question_answer25)   What is weak field ligand? Give one example.

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• question_answer26)   What is strong field ligand? Give an example.

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• question_answer27)   What do you mean by crystal field splitting?

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• question_answer28)   What are metal carbonyls?

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• question_answer29)   Which type of bond is present between metal and carbon in metal carbonyls?

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• question_answer30)   What is stability constant of complex compound?

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• question_answer31)   Define stepwise and overall stability constant of coordination compounds.

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• question_answer32)   What is instability or dissociation constant of coordination compounds?

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• question_answer33)   What are chelates?

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• question_answer34)   Which complex compound is responsible for photosynthesis?

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• question_answer35)   Name the complex compound used as oxygen carrier.

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• question_answer36)   Name the complex which is responsible for anti pernicious anaemia.

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• question_answer37)   What is Wilkinson catalyst?

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• question_answer38)   Which complex of silver is formed during photography?

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• question_answer39)   Name the complex used in the treatment of cancer (to inhibit the growth of tumours).

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• question_answer40)   Which chelating ligand is used in lead poisoning?

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• question_answer41)   Name the compound used to remove excess of copper and iron present in toxic proportions in plants and animals.

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• question_answer42)   Write name and formula of a complex compound formed during purification of Nickel.

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• question_answer43)   Name the compound used for the estimation of and ions present in hard water.

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• question_answer44)   Write name and formula of complex compound formed in the extraction of Ag and Au.  

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• question_answer45) What is difference between double salt and a complex compound?

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• question_answer46)   Explain with example homoleptic and heteroleptic complexes.

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• question_answer47)   Define geometrical isomerism in coordination compounds with suitable example.

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• question_answer48)   What is optical isomerism in coordination compounds. Give example?

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• question_answer49)   In which type of coordination compounds optical isomerism is common.

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• question_answer50)   Geometrical isomerism is not possible for tetrahedral complexes. Explain.

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• question_answer51)   has tetrahedral geometry but it is diamagnetic. Give reasons.

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• question_answer52)   Give reasons for the following : is outer orbital but is inner orbital complex.

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• question_answer53)   is paramagnetic but is diamagnetic complex. Why?

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• question_answer54)   Explain the structure of on the basis of V.B.T.

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• question_answer55)   has two unpaired electrons whereas has four unpaired electrons. Why?

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• question_answer56)   has five unpairedwhile has only one unpaired electron. Why?

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• question_answer57)   What is petrochemical series?

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• question_answer58)   Tetrahedral complexes are always of high spin. Explain.

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• question_answer59)   What is d-d transition?

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• question_answer60)   Explain the following (i) Anhydrous is white while hydrated is blue in colour. (ii) is violet in colour but becomes colourless on heating.

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• question_answer61)   is green and becomes violet when ethane 1, 2-diamine is added to it,

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• question_answer62)   Write two limitations of C.F.T.

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• question_answer63)   What is coordination number?

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• question_answer64)   Give one use of  

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• question_answer65) Explain splitting of d-orbitals in octahedral and tetrahedral ligand field.

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• question_answer66)   The splitting pattern of d-orbitals in octahedral and tetrahedral geometry are reverse of each other. Why?

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• question_answer67)   Explain.

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• question_answer68)   Explain the cause of colour in coordination compounds.

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• question_answer69)   Chelates are generally more stable than the complexes of unidentate ligands. Explain.

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• question_answer70)   What is the role of these reagents in analytical chemistry (i)(ii)(iii)nitrosonaphthol.  

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• question_answer71) Formation constant \[{{K}_{f}}\]for the two complex ions are: \[{{[Ni{{(en)}_{3}}]}^{2+}};{{K}_{f}}=1.1\times {{10}^{18}}\,\,and\]\[{{[Ni{{(N{{H}_{3}})}_{6}}]}^{2+}};\,\,{{K}_{f}}=5.3\,\times {{10}^{8}}\] Explain the relative stability of these complexes.

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• question_answer72) Which types of metals normally take part in the formation of co-ordination compounds?

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• question_answer73) What does 'en' represent? How many co-ordinate sites does it have?

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• question_answer74) Draw cis and trans isomers of \[{{[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]}^{+}}\] ion.

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• question_answer75) What is the co-ordination number?

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• question_answer76) Do transition metal atoms act as Lewis bases in the co-ordination compounds?

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• question_answer77) What do the abbreviations (i) dien and (ii) gly represent?

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• question_answer78) Both \[\sigma \]-and \[\pi \]-bonds are present in which type of organometallic compounds?

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• question_answer79) What does EDTA stand for?

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• question_answer80) Write the structure and the name of the co-ordinate isomer of \[[Co{{(en)}_{3}}]\,[Cr{{(CN)}_{6}}]\].

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• question_answer81) Is aluminium isopropoxide an organometallic compound?

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• question_answer82) What type of hybridisation is involved in the geometry of the (i) square planar (ii) tetrahedral (iii) octahedral complexes?

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• question_answer83) Calculate the oxidation state of metal ion in (i) \[{{[Ag{{(CN)}_{2}}]}^{-}}\,\] (ii) \[[Ni{{(CO)}_{4}}]\] (iii) \[{{[Fe{{(CN)}_{6}}]}^{3-}}\]

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• question_answer84) Give the molecular formulae of the following complexes (i) hexaammine iron (III) nitrate. (ii) ammonium tetrachloridocuprate (II) (iii) sodium monochloridopentacyanoferrate (II) (iv) potassium hexafluorocobaltate (III)

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• question_answer85) Give the IUPAC names of the following complex compounds (i) \[{{[CoBr(N{{H}_{3}})]}_{5}}S{{O}_{4}}\] (ii) \[[Fe{{(N{{H}_{3}})}_{6}}]\,[Cr{{(CN)}_{6}}]\] (iii) \[{{[Co(S{{O}_{4}})\,{{(N{{H}_{3}})}_{5}}]}^{+}}\] (iv) \[{{[Fe(OH){{({{H}_{2}}O)}_{5}}]}^{2+}}\]

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• question_answer86) How does en act as a chelating ligand with Cu(II) ion?

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• question_answer87) Are the bidentate ligands same as the ambident ligands?

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• question_answer88) Describe a simple test that will allow you to distinguish between the compounds: \[[Co{{(N{{H}_{3}})}_{5}}Br]S{{O}_{4}}\] and \[[Co{{(N{{H}_{3}})}_{5}}S{{O}_{4}}]Br\].

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• question_answer89) One mole of aqueous solution of the complex \[CoC{{l}_{3}}5{{H}_{2}}O\]when treated with excess of aqueous \[AgN{{O}_{3}}\] solution gave one mole of white ppt of AgCl. What is the complex?

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• question_answer90) How does EDTA help as a cure for lead poisoning?

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• question_answer91) How many geometrical isomers are possible for the complex \[[Ni{{(CO)}_{4}}]\] which is tetrahedral in nature?

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• question_answer92) Is the name potassium tris(oxalato)aluminate(III) for the complex \[{{K}_{3}}[Al{{({{C}_{2}}{{O}_{4}})}_{3}}]\] correct?

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• question_answer93) Is the complex \[[Ni{{(CO)}_{4}}]\] paramagnetic in nature?

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• question_answer94) The EAN of each Mn (Z = 25) in its carbonyl compound is 36. What is the structure of the carbonyl compound with molecular formula \[M{{n}_{2}}{{(CO)}_{10}}\]?

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• question_answer95) Write equations to represent the following observations: When NaOH is added to aqueous \[CuS{{O}_{4}}\] solution, a pale blue precipitate is formed. On adding aqueous \[N{{H}_{3}}\] solution, the precipitate dissolves to give a deep blue solution. If the solution is made acidic with dilute \[HN{{O}_{3}},\] the colour is converted back to pale blue solution.

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