Question

Transition metals usually exhibit highest oxidation states in their

• A. chlorides
• B. fluorides
• C. bromides
• D. iodides

Hint:

High oxidation states are stabilized by small and highly electronegative ligands like F. Hence highest oxidation states are commonly seen in fluorides.

Answer 1

The Correct Option is B

Step 1: Reason for high oxidation state stability.
High oxidation states are stabilized by highly electronegative ligands because they can withdraw electron density from metal strongly.
Step 2: Compare halogens.
Fluorine is the most electronegative and smallest halogen.
So it forms strongest M–F bonds and stabilizes metals in very high oxidation states.
Step 3: Conclusion.
Thus transition metals show highest oxidation states in fluorides.
Final Answer: \[ \boxed{\text{fluorides}} \]