Coordination Compounds PYQs Set 11 (PDF)

Set 11 of 20 · Questions 301-330 of 596

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Coordination Compounds · Set 11 (Q301-330)
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301. $Arrange the following coordination compounds in the increasing order of magnetic moments. (Atomic numbers: Mn = 25; Fe = 26) (A) [F e F_{6}]^{3 -} (B) [Fe(CN)_{6}]^{3 -} (C) [M n C l_{6}]^{3 -} (high spin) (D) [Mn(CN)_{6}]^{3 -}$ (1) $A<B<D<C$ (2) $B<D<C<A$ (3) $A<C<D<B$ (4) $B<D<A<C$ 302. $Which of the following complex ions is expected to absorb visible light? (At. no Zn = 30, Sc = 21, Ti = 22, Cr = 24)$ (1) $[Sc(H2O)3(NH3)3]3+$ (2) $[Ti(en)2(NH3)2]4+$ (3) $[Cr(NH3)6]3+$ (4) $[Zn(NH3)6]2+$ 303. $C u S O_{4} when reacts with K C N forms C u C N, which is insoluble in water. It is soluble in excess of K C N, due to formation of the following complex$ (1) $K_{2} [C u (C N)_{4}]$ (2) $K_{3} [C u (C N)_{4}]$ (3) $C u C N_{2}$ (4) $C u [K C u (C N)_{4}]$ 304. $Atomic number of Cr, Fe and Co are 24,26 and 27 respectively. Which of the following inner orbital octahedral complexes are paramagnetic?$ (1) $(Co (NH_{3})_{6})^{3 +}$ (2) $(Co (CN)_{3})^{3 +}$ (3) $(Fe (CN)_{6})^{4 -}$ (4) $(Cr (CN)_{6})^{3 -}$ 305. $An octahedral complex of C o^{3 +} is diamagnetic. The hybridisation involved in the formation of the comlex is:$ (1) $s p^{3} d^{2}$ (2) $d s p^{2}$ (3) $d^{2} s p^{3}$ (4) $s p^{3} d$ 306. $The octahedral complex of a metal ion M^{3 +} with four monodentate ligands L_{1}, L_{2}, L_{3} and L_{4} absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is :$ (1) $L_{4} < L_{3} < L_{2} < L_{1}$ (2) $L_{1} < L_{3} < L_{2} < L_{4}$ (3) $L_{3} < L_{2} < L_{4} < L_{1}$ (4) $L_{1} < L_{2} < L_{4} < L_{3}$ 307. $The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are:$ (1) $8 and 6$ (2) $6 and 8$ (3) $6 and 6$ (4) $8 and 8$ 308. $How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a C a^{2 +} ion ?$ (1) $Six$ (2) $Three$ (3) $One$ (4) $Two$ 309. $Which one of the following is wrongly matched?$ (1) $(Cu (NH_{3})_{4})^{2 +} - square planar$ (2) $(Ni (CO)_{4}) - neutral ligand$ (3) $(Fe (CN)_{6})^{3 -} - s p^{3} d^{2}$ (4) $(Co (en)_{3})^{3 +} - follows EAN rule$ 310. $Given below are two statements: Statement I: A homoleptic octahedral complex, formed using monodentate ligands, will not show stereoisomerism. Statement II: cis- and trans- platin are heteroleptic complexes of Pd. In the light of the above statements, choose the correct answer from the options given below:$ (1) $Statement I is true but Statement II is false$ (2) $Both Statement I and Statement II are true$ (3) $Both Statement I and Statement II are false$ (4) $Statement I is false but Statement II is true$ 311. $The value of 'spin only' magnetic moment for one of the following configurations is 2.84 BM. The correct one is: (Assuming octahedral complex)$ (1) $d^{4} (in strong field ligand)$ (2) $d^{4} (in weak field ligand)$ (3) $d^{3} (in weak as well as strong field ligand)$ (4) $d^{5} (in strong field ligand)$ 312. $The total number of stereoisomers for the complex [Cr(ox)_{2} ClBr]^{3 -} (where ox = oxalate) is$ (1) $3$ (2) $2$ (3) $4$ (4) $1$ 313. $The number of possible isomers of an octahedral complex [Co(C2O4)2(NH3)2]- is :$ (1) $1$ (2) $2$ (3) $3$ (4) $4$ 314. $Given below are two statements : Statement (I) : Dimethyl glyoxime forms a six membered covalent chelate when treated with NiCl_{2} solution in presence of NH_{4} OH . Statement (II) : Prussian blue precipitate contains iron both in (+2) and (+3) oxidation states. In the light of the above statements, choose the most appropriate answer from the options given below:$ (1) $Statement I is false but Statement II is true$ (2) $Both Statement I and Statement II are true$ (3) $Both Statement I and Statement II are false$ (4) $Statement I is true but Statement II is false$ 315. $Which of the following complex ions is not expected to absorb visible light ?$ (1) $[Ni(CN)4]2-$ (2) $[Cr(NH3)6]3+$ (3) $[Fe(H2O)6]2+$ (4) $[Ni(H2O)6]2+$ 316. $According to the valence bond theory the hybridization of central metal atom is d s p^{2} for which one of the following compounds?$ (1) $N i C l_{2} .6 H_{2} O$ (2) $K_{2} [N i (C N)_{4}]$ (3) $[N i (C O)_{4}]$ (4) $N a_{2} [N i C l_{4}]$ 317. $The hybridization involved in complex [N i (C N)_{4}]^{2 -} (At.No.Ni = 28) is$ (1) $s p^{3}$ (2) $d^{2} s p^{2}$ (3) $d^{2} s p^{3}$ (4) $d s p^{2}$ 318. $The octahedral diamagnetic low spin complex among the following is$ (1) $[Co(N H_{3})_{6}]^{3 +}$ (2) $[C o F_{6}]^{3 -}$ (3) $[C o C l_{6}]^{3 -}$ (4) $[N i C l_{4}]^{2 -}$ 319. $Number of stereoisomers exhibited by (Co (en)_{2} Cl_{2})^{+} is$ (1) $2$ (2) $5$ (3) $3$ (4) $4$ 320. $Out of T i F_{6}^{2 -}, C o F_{6}^{3 -}, C u_{2} C l_{2} and N i C l_{4}^{2 -} Z of T i = 22, C o = 27, C u = 29, N i = 28 the colourless species are$ (1) $C u_{2} C l_{2} and N i C l_{4}^{2 -}$ (2) $T i F_{6}^{2 -} and C u_{2} C l_{2}$ (3) $and N i C l_{4}^{2 -}$ (4) $T i F_{6}^{2 -} and$ 321. $In which of the following complexes the CFSE, Δ_{o} will be equal to zero?$ (1) $(Fe (en)_{3}) Cl_{3}$ (2) $K_{4} (Fe (CN)_{6})$ (3) $(Fe (NH_{3})_{6}) Br_{2}$ (4) $K_{3} (Fe (SCN)_{6})$ 322. $Geometrical shapes of the complexes formed by the reaction of N i^{2 +} with C l^{-}, C N^{-} and H_{2} O, respectively, are$ (1) $octahedral, tetrahedral and square planar$ (2) $tetrahedral, square planar and octahedral$ (3) $square planar, tetrahedral and octahedral$ (4) $octahedral, square planar and octahedral$ 323. $Complete removal of both the axial ligands (along the z -axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale)$ (1) (2) (3) (4) 324. $Identify the diamagnetic octahedral complex ions from below; (A) (Mn (CN)_{6})^{3 -} (B) (Co (NH_{3})_{6})^{3 +} (C) (Fe (CN)_{6})^{4 -} (D) (Co (H_{2} O)_{3} F_{3}) Choose the correct answer from the options given below:$ (1) $B and C Only$ (2) $A and C Only$ (3) $B and D Only$ (4) $A and D Only$ 325. $The spin only magnetic moment of [Mn(H_{2} O)_{6}]^{2} complexes is_______BM. (Nearest integer)$ 326. $A transition metal (M) among Mn, Cr, Co and Fe has the highest standard electrode potential (M^{3 +} / M^{2 +}). It forms a metal complex of the type (M (CN)_{6})^{4 -} . The number of electrons present in the e_{g} orbital of the complex is .$ 327. $Total number of geometrical isomers for the complex [RhCl(CO)(P P h_{3})(N H_{3})] is$ 328. $A list of species having the formula X Z_{4} is given below. X e F_{4}, S F_{4}, S i F_{4} . BF_{4}^{-}, BrF_{4}^{-}, [Cu(N H_{3})_{4}]^{2 +}, [F e C l_{4}]^{2-}, [C o C l_{4}]^{2-} and [P tC l_{4}]^{2-} . Defining shape on the basis of the location of X and Z atoms, the total number of species having a square planar shape is$ 329. $A metal complex with a formula MCl_{4} \cdot 3 NH_{3} is involved in sp^{3} d^{2} hybridisation. It upon reaction with excess of AgNO_{3} solution gives ' x' moles of AgCl . Consider ' x' is equal to the number of lone pairs of electron present in central atom of BrF_{5} . Then the number of geometrical isomers exhibited by the complex is .$ 330. $The number of geometric isomers possible for the complex [C o L_{2} C l_{2}]^{-} (L = H_{2} N C H_{2} C H_{2} O^{-}) is$