Multiple choice

The most stable complex ion is

  1. [Fe(OH)6]3-

  2. [Fe(CN)6]3-

  3. [Fe(Cl)6]3-

  4. [Fe(H2O)6]3+

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This option is correct because the stability of the complex ion is determined by the strength of ligand. Hence, CN ligand has strong ligand field. On the basis of its nature, this complex ion is the most stable. Cl and water  belongs to low ligand field.

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