Why does alkali elements react vigorously with water?

Explanation:

Because the alkali metal is really willing to give up its electron much more so than Hydrogen.

The redox reaction looks like this

K ===> K+   +    1 e-    The reduction vo is very high which means that the K really does want to give up that electron.

2H+  +2e- > H2  The oxidation vo is almost 0 but the Hydrogen is the perfect recipient for the 2 electrons.

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