CHEMISTRY JEEMAINS+ ADVANCED TARGET-2025 WORKSHEET -02 ‘COORDINATION COMPOUND Single correct Q.1 Howmany geometrical isomers and stereoisomers are possible for [Pt(NO, )(NH, )(NH,OH)(Py)]" and [Pt(Br)(C1)(1)(NO, )(NH , )(Py)] respectively (A)3 and 15 (B)3and30 (C)4 and 15 (D)4and 30 Q2 — Ontreatment of 100 mL of 0.1 M solution of CoCl,. 61,0 with excess AgNO; 0.6 10? ions are precipitated. The complex is (A) [Co(H,0),C1,].3H,0 (B) [Co(H,0),JCl, (C)[Co(H,0),CNC1.H,O (D) [Co(H,0),CL,] CL2H,0 Q3__ Inwhich of the following pairs, hybridization, magnetic moment & geometry are same? (A) [CrF,}*, [Co(H,0),)? (B) [IrFJ* , [Co(NH,),)* (C) [Co(H,0),F* [Co(CN),} (D) [Cu(NH,),P”, [Ni(NH,),)? Q4 The crystal field stabilization energy of [Co(NH, ),JCl, is (A)72.Ay (B) 0.4.) (C)24.A, (D)3.6A, Q.5__ Inthe complex acetylbromidodicarbonylbis(ttisthylphosphine)iron(I), the number of Fe-C bond(s) is (a)3 (84 6 ws Q.6 — Whatis oxidation stare, magnetic moment and ype of hybridisation of central metal cation in following complex: [Os(ONO) (0), (O,) (SCN) (H,0)] OH (A)+7, V3. BM., @’sp' hybridisation (B)+8,0 BM., sp*? hybridisation (C)+8,0 B.M., d?sp* hybridisation (D)+9,0 BM., hybridisation Q7 Which of the following statement is correct regarding the complex (Cul), one solution is blue and anothers green (A) The blue solution will have higher value of, (B) The green solution will have higher value of Ay (©) Both have same value of A, (D) No prediction can be done regarding A,, Q8 — Thecorrect order of magnetic moments is: (A) [MnCl,P-> [CoCl, > [Fe(CN),]* — (B) [MnCl > [Fe(CN),]* > [CoCl, (C) [Fe(CN),J* > [MnCl,? >[CoCl,? — (D) [Fe(CN),}* > [CoCl,}? > [MnCl Q.9 Choose the correct code regarding, possible number of geometrical isomers exhibited by following complexes: © [CrCl,(NO,),(NH,)3} {)— [Co(NO,),(NH,)x] (ID [PtCI(NO, (NH, )(py)] (IV) [PtBrCl(en)] o @ ay ay © a an ay (A) 4 2 3 1 @) 5 2 4 0 (c) 3 2 0 1 (D) 2 3 0 eam i) CHEMISTRY BY NIRMAL SIRQi0 Qu Qi Qs Qu Qs Qi6 Quy Qs Inthe complex with formula MCI, 4H,O, the coordination number of the metal Mis six and there is no molecule of hydration in it. The volume of 0.1 MAgNO, solution needed to precipitate the free chloride ions in 200 mL of 0.01 M solution of the complex is : (A)40mL. (B)20mL (C)60mL (D)80mL. 50 ml of 0.2 M solution of a compound with empirical formula CoC1,,4NH, on treatment with excess of AgNO (aq) yields 1.435 g of AgCl. Ammoniais not removed by treatment with concentrated H,SO,, The formula of the compound is (A) CoCl,(NH,), (B) (CoC1(NH,),|Cl (C)[Co(NH,), ICI, (D) [CoC (NH,)]NH, How many pairs of enantiomersare possible for following complex compound. [M(AB) (CD) ef "* (where AB, CD —Unsymmetsical bidentate ligand ; ¢,(—Monodcntate ligands) (A)20 (5 (©)10 (D)8 ‘The number of unpaired electrons calculated in [Co(NH,),}°* and [CoF,}*- are (A)4and4 (B)Oand2 (C)2and4 (D) Oand4 Identify the geometrical isomers of the following: 1 pe uf 4 ej T 7 yD cl cl " a en 1 W iit iv (A) Lwith IIT (B) [with IV (C)I with andIV — (D)none of these Which of the following is not comectly matched? Complexion CFSE (A) [Co(NH,),)* 24Dq 8) [CK(NH,),}° 12Dq (© [Fer 4Dq ©) [Fe(CN)* 20Dq Among the following pairs of complexes, in which case the Ay value is higher for the first one? (A) [Co(NH,),]** and [Co(CN),]* (B) [CoF,]}* and [Co(NH,),]* (C)[Co(H,0),]** and [Co(H,0),]** (D) [Rh(H,0),]** and [Co(H,0),}** The total number of possible isomers of the compound [Cu!(NH,),] [PUCl,] are: (A)3 (B)5 «4 (D6 In which of the following octahedral complexes of Co (at. no. 27), will the magnitude of A, be the highest? (A[COCN),* (BY [Co(C,O),* — (C)[Co(H,O),* ——_(D) [Co(NHL),P (2) © CHEMISTRY BY NIRMAL SIRQ.19 Assign the hybridization, shape and magnetic moment of K,{Cu(CN),] (A) sp*, tetrahedral , 1.73 B.M. (B) dsp? square planar, 1.73 BM. (C) sp’, tetrahedral, diamagnetic (D) dsp, square planar, 2.44 B.M. Q.20 Inthe complexes [Fe(H,0),}”, [Fe(CN),]", [Fe(C,O,),]* and [FeCl,]*, more stability is shown by— (A) [Fe(H,0),)" (B) [Fe(CN),]"* (© [Fe(C,0,),}° (D) [Fech,}* Q21 The octahedral complex ofa metal ion M* with four monodentate ligands L,, L,, L, and L, absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is : AL, K,{Ca(CN),] | K,S0, (B) MgO +Al—>Al,0, + Mg (C) [CoC(NH,),]' + 5H! > Co? + SNH,' + Cr (D) [Mg(H,0), P+ (EDTA) —_esesNa0ll_, [Mg(EDTA)}* + 6H Q27 Anion M*, forms the complexes [M(H,0),}*, [M(en),]** and [MBr,]*, match the complex with the appropriate colour. (A) Green, blueand red (B) Blue, red and green (©) Green, red and blue (D) Red, blueand green 0.28 Which of the following ligands is called x-acceptors ? co CN NO* oO ay, a, (A) 1,11, IIL correct (B)1, Honly correct (C) IL Mronly correct (D) only correct (3) © CHEMISTRY BY NIRMAL SIRAssertion Reason Q29 Statemenet-1 : [Fe(EDTA)] complex is octahedral in shape Statement-2 _: EDTA is a hexadentate ligandand undergoing sp'd hybridisation (A) Statement+1 is true, statement-? is true ané statement-? is correct explanation for statement1 (B) Statement-1is true, statement-2 is trueand statement-2 is NOT the correct explanation for statement-1 (©)Statement-1 is true, statement-2 is false. (D)Statement 1 is false, statement 2 Q.30 Statement-1 : —_ InZeise's salt C-C bond order regarding ethylene molecule is less than two. Statement-2 Ethylene accepts clectron pair from filled d-orbital of Pt?’ into its vacant bonding MO. (A) Statement- is true, statement-2 is true ané statement-2 is correct explanation for statement-1 (B) Statement-1 is true, statement-2 is ruc and statement-2 is NOT the correct explanation for statement-1 (©) Statement-1 is true, statement-2 is false. (D)Statement- is false, statement-2 is true. Q31 Statement-1: Complexes containing three bidentate groups such as [Cr(ox),]* and [Co(en),]** do not show optical activity, Statement-2: Octahedral complex, [Co(NH,),Cl,]CI shows geometrical isomerism, (A) Statement-1 istrue,statement-2 is true and statement-2 is correct explanation for statement-I. (B) Statement- is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1 (©) Statement-1 is true, statement-2 is false. (D)Statement- is false, statement-2 is true. Comprehension Paragraph for question nos. 32 to 34 Nil! (NH,), (NO;)). 2H,0 molecule may have two unpaired electrons or zero unpaired electron and ‘measurement of magnetic moment helps us to predict the geometry. Q.32__Ifmagnetic moment value is zero then the formala of the complex will be (A) [Ni(NH,),] (NO,), .2H,0 (B) [Ni(NH,),(H,0),](NO,),. 2NH, (©) [Ni (NH,), (H,0),] (NO), (D) [Ni (NO,), (H,0),] Q.33 Ifthe magnetic moment value is 2V2 and conducts electricity then the formula of the complex is (A) [Ni(NH,),] (NO,), .2H,0 (B) [Ni(NH,),(H,0),](NO,),. 2NH, (C)INi (NH,), (H,0)3] (NO), (D) [Ni (NH), (NO,),]. 2H,0 Q34_ The higher and lower value of magnetic moment of the given complex corresponds to the following geometries respectively. (A) Octahedron and Tetrahedron (B) Octahedron and square planar (©) Square planar and Octahedron (D) Octahedron and Octahedron amg GB (4) CHEMISTRY BY NIRMAL SIRQ35 Q36 Paragraph for question nos. 35 & 36 ‘The crystal field theory (C.F.T jis now much more widely accepted than the valence bond theory. It assume thatthe attraction between the central metal and the ligands in a complex is purely electrostatic. According to C.-T. ligands are treated as a point charge and crystal field splitting energy (CFSE) increases the thermodynamic stability of the complexes. Value of CFSE depends upon nature of ligand anda spectrochemical series has been made experimentally. For tetrahedral complexes, A is about 4/9 times to 4, (CFSE for octahedral complexes). This energy lies in visible region and i. why electronic transition are responsible for colour. Crystal field stabilization energy for [CoF,,} *is (A) 0.6 +P (B)-04+P (C)1.2+2P (D)2.4+4P [P is pairing energy] Ti**(aq) is violet while'Ti**(aq) is colourless because - (A) There is no crystal field effect in Tit* (B) There energy difference between tg and e, of Ti**is quite high and does not fallin the visible region. (©)Ti* has d! configuration. . (D) Ti* is very small in comparison to Ti** and hance does not absorb any radiation. More than one may be correct Q37 Q38 Q39 Q.40 Qa ‘Choose incorrect statement(s) regarding following complex ion. [Fe(ox),}* and [Fe(NO,),}* (A) [Fe(ox),]* complex ion is more stable than [Fe(NO,),]° (B) Both complex ions are optically inactive. (© Both follow Sidwick’srule of E.A.N. (D) Both are paramagnetic. When O, is adsorbed on a metallic surface, electron transfer occurs from the metal to O,, The TRUE statement(s) regarding this adsorption is(are) (A) 0, is physisorbed (B) heat is released (C) occupancy of x3, of, is increased —__(D) bond length of is increased. Select incorrect statement(s) for |(Cu(CN),|>[Ca(CN), and [Cu(NH,), ?* complex ion (A) Both [Cd(CN), and [Cu(NH,),** have square planar geometry (B) [Cu(CN),}* and [Cu(NH,),** have equal no. of unpaired electron (C)[Cu(CN),}* and [Ca(CN), can be separated from the mixture on passing H,S gas. (D) All the three complexes have magnetic moment equal to zero. Which of the following statements is not true about the complex ion [CrCI(NO,)(en),]" (en ethylene diamine) (A) Ithas two geometrical isomers-cis and trars (B) cis and trans forms are not diastereomers to each other (©) Only the cis isomer displays optical activity (D) thas three optically active isomers :d,/and meso forms Which of the following compound(s) show(s) optical isomerism, (A) [Pt(bn),}** (B) [CrCl,(en),] (C)[Cofen),] [CoF,] (D)[Zn(ely),] —— CHEMISTRY BY NIRMAL SIR (5)Match the column Q42 Q43 Column I Column IT (A) Only four stereoisomer @)— [M(AB),I" (B) —_ Fouropticallyactive isomer (Q) [M(AA)a,b, (C) Double the number of geometrical isomer (8) [Mayb, ed] compared to any other complex given in column Il, (S)_—_ [Ma,bed}** Column Column IL (A) [Majb,c,]"* (P) _ fouropticallyactive isomers (8B) [Ma,b,c]"* (Q) total 15 space isomers (©) [Magbede]"* (R) three geomettical isomers @) [M(AB),]"* (Ss) except one, other geometrical isomers are optically inactive. Q44 Q45 Q46 Qa7 Q48 Find the number of paramagnetic species each central metal ion having t§, eg° configuration, 0. (K,[Fe(CN),] (i) (NH,),Co “Co(NH;), |(S0,)» “SNH, (iii) K,[Fe(CN),O5] (iv) K{Co(CN),0,] (v) [Fe(CN),0,) 5 (vi) Nag[Fe(CN),NO"] (vii) K,[Co(CN),0,] (vig| NHD.Co” Co(NH,), |(SO,), o F (oy SHC” Co(NH), No, Ifall six positions of octahedral geometry are marked by different colours first, then any one bidentate unsymmetrical ligand havingno chiral centre can be introduced by numberof ways. Write the sum of Geometrical isomers of [Pt(H,N —CH(CH,)—COO ),] complex and stereo isomers of [Pt(gly),}' complex. The number of optically active isomer for [P(NH,),(F(CI(BND]° is. Find the number of t,, ande, electrons in [NiF,}? [Ifans is 4 & 2 then represent as 42] Gucmusinyeywmmaee CHEMISTRY BY NIRMAL SIR ( )