How many of the following statements are incorrect? (1) [Rh(NH₃)₆]³⁺ has a larger Δₒ than [Co(NH₃)₆]³⁺. (2) The CFSE of high-spin [Mn(H₂O)₆]²⁺ is zero. (3) For the same metal and ligand, Δₜ is larger

Question

How many of the following statements are incorrect? (1) [Rh(NH₃)₆]³⁺ has a larger Δₒ than [Co(NH₃)₆]³⁺. (2) The CFSE of high-spin [Mn(H₂O)₆]²⁺ is zero. (3) For the same metal and ligand, Δₜ is larger than Δₒ. (4) [Ni(CN)₄]²⁻ is tetrahedral because CN⁻ is a weak-field ligand. (5) A weak-field octahedral d⁴ ion shows Jahn–Teller distortion. (6) The colour of [Zn(H₂O)₆]²⁺ arises from d–d transitions.

TestHub · Accepted Answer

(1) is correct because 4d metals give larger splitting. (2) is correct for t 2 g ​ ³ e g ​ ². (3) is wrong as Δₜ ≈ (4/9)Δₒ. (4) is wrong because the complex is square planar with strong-field CN⁻. (5) is correct. (6) is wrong because Zn²⁺ is d¹⁰ and colourless. Incorrect statements: 3.

Chemistry - Coordination Chemistry Question with Solution | TestHub

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