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  • Why do metals like sodium and potassium need to be stored in kerosene, while metals like copper do not?

Why do metals like sodium and potassium need to be stored in kerosene, while metals like copper do not?

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The metals like sodium and potassium are extremely reactive metals that react with water and oxygen in the air, they must be kept in kerosene. The kerosene acts as a protective barrier that prevents these metals from exposure to oxygen and ensuring the metal stays stable and pure.
Copper (Cu) is less reactive than potassium and sodium. At room temperature, neither water nor oxygen reacts with it. Copper, when exposed to air, produces a small layer of copper oxide on its surface, but this reaction is slow and harmless; that's why it does not need to be stored in kerosene for protection.

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Saniya Khatri

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