Atoms and Atomic Structure

Which elements have only one valence electron?

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Wiki User
09/16/2010

In addition to hydrogen, all elements in Group I of the periodic table have one valence electron. They are lithium, sodium, potassium, rubidium, cesium, and francium.

The farther you move right on the periodic table the more valence electrons. For example, elements in Group VII have 8 valence electrons except helium.