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Which of the following statements is true for the complex [Fe(CN)6]3-? (2023)

Practice Questions

Q1
Which of the following statements is true for the complex [Fe(CN)6]3-? (2023)
  1. It is a high-spin complex
  2. It is a low-spin complex
  3. It has a coordination number of 4
  4. It is paramagnetic

Questions & Step-by-Step Solutions

Which of the following statements is true for the complex [Fe(CN)6]3-? (2023)
  • Step 1: Identify the complex in question, which is [Fe(CN)6]3-.
  • Step 2: Recognize that Fe (iron) in this complex has an oxidation state of +3.
  • Step 3: Determine the electron configuration of Fe in the +3 state, which is [Ar] 3d5.
  • Step 4: Understand that CN- (cyanide) is a strong field ligand.
  • Step 5: Know that strong field ligands cause electrons to pair up in the lower energy d-orbitals.
  • Step 6: Conclude that in [Fe(CN)6]3-, the electrons will be paired, leading to a low-spin configuration.
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