Question

The most stable ion is:-

Options

• [Fe(OH)₃]^3–

• [Fe(Cl)₆]^3–

• [Fe(CN)₆]^3–

• [Fe(H₂O)₆]³⁺

Answer 1

[Fe(CN)₆]^3– 

Explanation:

Silver nitrate solution m. The reaction with copper causes it to turn blue.

\[\ce{Cu(s) + 2Ag NO3 (aq) -> \underset{Blue}{Cu(NO3)2} (aq) + 2Ag5}\]