Chemistry
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18

reacts most vigorously with water a. Alkali metal b. Alkaline earth metal c. Transition metal d. Halogen e. Noble gas

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whitneywiggins

The answer is - a. Alkali Metal.  They react violently with water to form alkaline solutions. This is because they all have 1 electron in their outer shell and losing 1 electron allows them to have full outer shells, and achieve stability.

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