Why do the alkali metals have to be stored under oil?
Because they are highly sensitive to air-borne moisture and air.
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Alkali metals have to be stored under oil because they are highly reactive with oxygen and moisture in the air, which can lead to the formation of oxides and hydroxides. Storing them under oil prevents them from coming into contact with air, thus reducing the risk of oxidation and ensuring their stability.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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