Question

The most stable ion is:-

विकल्प

• [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.

$$\mathrm{Cu}(\mathrm{s})+2\mathrm{Ag}\mathrm{NO}{\phantom{A}}_3(\mathrm{aq})⟶\underset{\mathrm{Blue}}{\mathrm{Cu}(\mathrm{NO}{\phantom{A}}_3){\phantom{A}}_2}(\mathrm{aq})+2\mathrm{Ag}{\phantom{A}}_5$$