Question

The most stable oxidation state of Iron is:

• A. \( +2 \)
• B. \( +3 \)
• C. \( +4 \)
• D. \( -2 \)

Hint:

The stability of oxidation states depends on factors like electronic configuration, hydration energy, and ligand interactions.

Answer 1

The Correct Option is B

Iron exhibits various oxidation states, with Fe$^{3+}$ being the most stable due to its half-filled d$^5$ electron configuration. This inherent stability leads to its widespread presence in nature. While Fe$^{2+}$ is also prevalent, it readily oxidizes to Fe$^{3+}$. This characteristic stability plays a significant role in biological functions, such as in hemoglobin, and in industrial processes like rusting and catalysis.