All the elements in the first column of the periodic table (lithium, sodium, potassium, rubidium, cesium, and francium) have one valence electron. I also believe Helium has on â¦ e valence electron.ll the elements in the first column of the periodic table (lithium, sodium, potassium, rubidium, cesium, and francium) have one valence electron. I also believe Helium has on â¦ e valence electron.