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 exists in multiple oxidation states, but Fe$^{3+}$ is the most stable due to its half-filled d$^5$ configuration, making it highly stable and commonly found in nature. Fe$^{2+}$ is also common, but it is more prone to oxidation to Fe$^{3+}$. This stability is crucial in biological systems such as hemoglobin and industrial applications like rusting and catalysis.