Coordination Compounds PYQs Set 12 (PDF)

Set 12 of 20 · Questions 331-360 of 596

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Coordination Compounds · Set 12 (Q331-360)
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331. $The complex that can show optical activity$ (1) $cis [Fe (NH_{3})_{2} (CN)_{4})^{-}$ (2) $trans - [Cr (Cl_{2}) (ox)_{2}]^{3 -}$ (3) $trans - [Fe (NH_{3})_{2} (CN)_{4}]$ (4) $cis - [CrCl_{2} (ox)_{2}]^{3 -} (ox = oxalate)$ 332. $The magnetic moment of the high spin complex is 5.92 BM . What is the electronic configuration?$ (1) $t_{2 g}^{3} e_{g}^{1}$ (2) $t_{2 g}^{4} e_{g}^{2}$ (3) $t_{2 g}^{3} e_{g}^{2}$ (4) $t_{2 g}^{5} e_{g}^{0}$ 333. $The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to + 3 state is:$ (1) $(Co (phen)_{3})^{2 +}$ (2) $(Ni (phen)_{3})^{2}$ (3) $(Zn (phen)_{3})^{2 +}$ (4) $(Fe (phen)_{3})^{2}$ 334. $The set with only ambidentate ligands in the following is$ (1) $NO_{3}^{⊖}, Br^{⊖}, C_{2} O_{4}^{2 ⊖}$ (2) $NO_{2}^{⊖}, CN^{⊖}, SCN^{⊖}$ (3) $NO_{2}^{⊖}, C_{2} O_{4}^{2 ⊖}, NH_{3}$ (4) $SCN^{⊖}, CO, NH_{3}$ 335. $The correct order of intensity of colors of the compounds is:$ (1) $[N i (C N)_{4}]^{2 -} > [N i C l_{4}]^{2 -} > [N i (H_{2} O)_{6}]^{2 +}$ (2) $[N i (H_{2} O)_{6}]^{2 +} > [N i C l_{4}]^{2 -} > [N i (C N)_{4}]^{2 -}$ (3) $[N i C l_{4}]^{2 -} > [N i (H_{2} O)_{6}]^{2 +} > [N i (C N)_{4}]^{2 -}$ (4) $[N i C l_{4}]^{2 -} > [N i (C N)_{4}]^{2 -} > [N i (H_{2} O)_{6}]^{2 +}$ 336. $The number of geometric isomers that can exist for square planar [P t (C l) (p y) (N H_{3}) (N H_{2} O H)]^{+} is (py = pyridine ) :$ (1) $2$ (2) $3$ (3) $4$ (4) $6$ 337. $Identify, from the following, the diamagnetic, tetrahedral complex$ (1) $(Ni (Cl)_{4})^{2 -}$ (2) $(Co (C_{2} O_{4})_{3})^{3 -}$ (3) $(Ni (CN)_{4})^{2 -}$ (4) $(Ni (CO)_{4})$ 338. $The number of bridging CO ligand (s) and Co - Co bond (s) in Co_{2} (CO)_{8} respectively are:$ (1) $2 and 1$ (2) $2 and 0$ (3) $0 and 2$ (4) $4 and 0$ 339. $Match List-I with List-II LIST-I Coordination Complex (A) [Cr(CN)_{6}]^{3 -} (B) [Fe(H_{2} O)_{6}]^{2 +} (C)[Co(N H_{3})_{6}]^{3 +} (D) [Ni(N H_{3})_{6}]^{2 +} LIST-II Number of unpaired electrons (I) 0 (II) 3 (III) 2 (IV) 4 Choose the correct answer from the options given below:$ (1) $A-II, B-IV, C-I, D-III$ (2) $A-III, B-IV, C-I, D-II$ (3) $A-II, B-I, C-IV, D-III$ (4) $A-IV, B-III, C-II, D-I$ 340. $Consider the complex ions, trans- [Co (en)_{2} Cl_{2}]^{+} (A) and cis - [Co (en)_{2} Cl_{2}]^{+} (B) The correct statement regarding them is$ (1) $both (A) and (B) can be optically active.$ (2) $both (A) and (B) can not be optically active.$ (3) $(A) can not be optically active, but (B) can be optically active.$ (4) $(A) can be optically active, but (B) can not be optically active.$ 341. $N i C l_{2} {P (C_{2} H_{5})_{2} (C_{6} H_{5})}_{2} exhibits temperature dependent magnetic behaviour (paramagnetic/ diamagnetic). The coordination geometries of N i^{2 +} in the paramagnetic and diamagnetic states are respectively$ (1) $tetrahedral and tetrahedral$ (2) $square planar and square planar$ (3) $tetrahedral and square planar$ (4) $square planar and tetrahedral$ 342. $Which one of the following is an inner orbital complex as well as diamagnetic in behaviour ? [Atomic No. Zn = 30, Cr = 24, Co = 27, Ni = 28]$ (1) $[Zn(NH3)6]2+$ (2) $[Ni(NH3)6]2+$ (3) $[Cr(NH3)6]3+$ (4) $[Co(NH3)6]3+$ 343. $The compound(s) that exhibit(s) geometrical isomerism is(are) :$ (1) $[Pt(en) C l_{2}]$ (2) $[Pt (e n)_{2}] C l_{2}$ (3) $[Pt(en)_{2} C l_{2}] C l_{2}$ (4) $[Pt(N H_{3})_{2} C l_{2}]$ 344. $A coordination complex compound of cobalt has the molecular formula containing five ammonia molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three mole ions in an aqueous solution. On reacting this solution with excess of A g N O_{3} solution, we get two moles of A g C l precipitate. The ionic formula for this complex would be$ (1) $[C o (N H_{3})_{5} (N O_{2})] C l_{2}$ (2) $[C o (N H_{3})_{5} C l] [C l (N O_{2})]$ (3) $[C o (N H_{3})_{4} (N O_{2}) C l] (N H_{3}) C l$ (4) $(C o (N H_{3})_{5}) [(N O_{2})_{2} C l_{2}]$ 345. $Which of the following facts about the complex [Cr(NH3)6]Cl3 is wrong ?$ (1) $The complex involves d2sp3 hybridisation and is octahedral in shape.$ (2) $The complex is paramagnetic.$ (3) $The complex is an outer orbital complex.$ (4) $The complex gives white precipitate with silver nitrate solution.$ 346. $Which one has largest number of isomers ?$ (1) $[C o (e n)_{2} C l_{2}]^{+}$ (2) $[Co(N H_{3})_{5} Cl]^{2 +}$ (3) $[Ir(P h R_{3})_{2} H(CO)]^{2 +}$ (4) $[R u (N H_{3})_{4} C l_{2}]^{+}$ 347. $Among the following which is not the π ‐bonded organometallic compound?$ (1) $K [P tC l_{3} (η^{2} - C_{2} H_{4})]$ (2) $F e (η^{5} - C_{5} H_{5})_{2}$ (3) $C r (η^{6} - C_{6} H_{6})_{2}$ (4) $(C H_{3})_{4} S n$ 348. $According to Valence Bond Theory, the number of unpaired electrons present in (MnCl_{6})^{3 -}, (Fe (CN)_{6})^{3 -} and (Co (C_{2} O_{4})_{3})^{3 -}, respectively, are$ (1) $0 : 5 : 0$ (2) $4 : 3 : 2$ (3) $4 : 1 : 0$ (4) $5 : 4 : 3$ 349. $In the silver plating of copper, K [A g (C N)_{2}] is used instead of A g N O_{3} . The reason is$ (1) $a thin layer of Ag is formed on C u$ (2) $more voltage is required$ (3) $A g^{+} ions are completely removed from solution$ (4) $less availability of A g^{+} ions, as Cu can not displace Ag from [A g (C N)_{2}]^{-} ion$ 350. $A metal complex absorbed orange light. The colour in which it appears is$ (1) $yellow$ (2) $yellow-green$ (3) $red$ (4) $green-blue$ 351. $Number of possible isomers for the complex [Co (e n)_{2} Cl_{2}] Cl will be (en ethylenediamine)$ (1) $1$ (2) $3$ (3) $4$ (4) $2$ 352. $Consider that a d^{6} metal ion (M^{2 +}) forms a complex with aqua ligands, and the spin only magnetic moment of the complex is 4.90 BM . The geometry and the crystal field stabilization energy of the complex is$ (1) $tetrahedral and - 1.6 Δ_{t} + 1 P$ (2) $octahedral and - 2.4 Δ_{0} + 2 P$ (3) $tetrahedral and - 0.6 Δ_{t}$ (4) $octahedral and - 1.6 Δ_{0}$ 353. $Which among the following is a paramagnetic complex7.$ (1) $[C o (N H_{3})_{6}]^{3 +}$ (2) $[P t (e n) C l_{2}]$ (3) $[C o B r_{4}]^{2 -}$ (4) $M o (C O)_{6}$ 354. $Of the following complex ions, which is diamagnetic in nature?.$ (1) $[N i C 1_{4}]^{2 -}$ (2) $[N i (C N)_{4}]^{2 -}$ (3) $[C u C 1_{4}]^{2 -}$ (4) $(CoF_{6})^{3 -}$ 355. $The sum of coordination number and oxidation number of the metal M in the complex [M (e n)_{2} (C_{2} O_{4})] Cl (where e n is ethylenediamine) is$ (1) $6$ (2) $7$ (3) $8$ (4) $9$ 356. $What is the number of unpaired electrons of nickel observed in (Ni (CN)_{4})^{2 -} ?$ (1) $zero$ (2) $2$ (3) $6$ (4) $4$ 357. $Nickel (Z = 28) combines with a uninegative monodentate ligand X^{-} to form a paramagnetic complex [N i X_{4}]^{2-} . The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively :$ (1) $one, tetrahedral$ (2) $two, tetrahedral$ (3) $one, square planar$ (4) $two, square planar$ 358. $What is the correct electronic configuration of the central atom in K_{4} (Fe (CN)_{6}) based on crystal field theory?$ (1) $t_{2 g}^{4} e_{g}^{2}$ (2) $t_{2 g}^{6} e_{g}^{0}$ (3) $e^{3} t_{2 g}^{3}$ (4) $e^{4} t_{2 g}^{2}$ 359. $The spin only magnetic moment of the complex present in Fehling's reagent is______ B.M. (Nearest integer).$ 360. $The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of CoCl_{3} \cdot 4 NH_{3} is____ (Round off to the Nearest Integer).$