Multiple choice

Which of following is a low spin complex?

  1. [Co(H2O)6]3+
  2. [Ni(CN)4]2-
  3. [CoF6]3-

  1. Only 1

  2. Only 2

  3. Only 3

  4. Only 2 and 3

  5. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • The complex has a square planar shape.
    • CN- is a strong-field ligand.
    • The d electron configuration for Ni2+ is d8.
    • The splitting energy is large. Therefore, the complex is low spin.

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