Coordination number = number of ligand donor atoms bonded to metal. 6 CN⁻ ligands are bonded to Fe, so CN = 6.
Back to JEE Main 2022 Inorganic Chemistry
JEE Main 2022 — Chemistry Inorganic Chemistry
easy
mcq
2022
Official previous-year question
Verified 30 May 2026.
Question
The coordination number of central metal ion in [Fe(CN)₆]⁴⁻ is:
Options
- A2
- B4
- C6
- D8
Solution
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