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Alkali metal (view source)

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Sodium and potassium [[chemical compound|compounds]] are needed in the human body, while lithium is a little toxic.

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==List of alkali metals==

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*[[Lithium]]

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*[[Sodium]]

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*[[Potassium]]

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*[[Rubidium]]

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*[[Caesium]]

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*[[Francium]] (very unstable)

[[Category:Elements]]

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