Which one among the following metals is not stored under oil?
- A. Sodium
- B. Rubidium
- C. Potassium
- D. Lithium ✓
Correct Answer: D. Lithium
Explanation
Lithium is the lightest metal and floats on kerosene oil; therefore, it is typically wrapped in paraffin wax instead of being stored under oil[cite: 1].
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