jee_main_2026_24_january_morning - Coordination Compounds Topics

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QUESTION #51 Magnetic Properties and Shapes
Given below are two statements : Statement-I Hybridisation, shape and spin only magnetic moment of K_3[Co(CO_3)_3] is sp^3d^2, octahedral and 4.9 text BM respectively. Statement-II Geometry, hybridisation and spin only magnetic moment values (BM) of the ions [Ni(CN)_4]^2-, [MnBr_4]^2- and [CoF_6]^3- respectively are square planar, tetrahedral, octahedral : dsp^2, sp^3, sp^3d^2 and 0, 5.9, 4.9. In the light of the above statements, choose the correct answer from the options given below
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QUESTION #58 Ionization Isomerism and Precipitation Reactions
Consider a mixture 'X' which is made by dissolving 0.4 text mol of [Co(NH_3)_5SO_4]Br and 0.4 text mol of [Co(NH_3)_5Br]SO_4 in water to make 4 text L of solution. When 2 text L of mixture 'X' is allowed to react with excess of AgNO_3, it forms precipitate 'Y'. The rest 2 text L of mixture 'X' reacts with excess BaCl_2 to form precipitate 'Z'. Which of the following statements is CORRECT.
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QUESTION #59 Paramagnetism and Unpaired Electrons
Given below are two statements Statements-I: The number of paramagnetic species among [CoF_6]^3-, [TiF_6]^3-, V_2O_5 and [Fe(CN)_6]^3- is 3. Statement-II: K_4[Fe(CN)_6] < K_3[Fe(CN)_6] < [Fe(H_2O)_6]SO_4 cdot H_2O < [Fe(H_2O)_6]Cl_3 is the correct order in terms of number of unpaired electron(s) in the complexes. In the light of the above statements, choose the correct answer from the options given below.
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)
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