Group 1 Elements: You Know !! Group 1 elements are known as Alkali metals . These alkali metals belongs to s-block . All the group 1 elements having one valence electron. Group 1 elements are Hydrogen , Lithium, Sodium, Potassium , Rubidium, Cesium and Francium. Alkali metals are s-block elements of the modern periodic tableTrick to memorize Group 1 Elements of the Periodic table in English – Digital Kemistry