This group is the most reactive of the metals in group 1 on the periodic table. The two most important alkali metals are sodium and potassium because they are an important element to life. Without sodium and potassium, ANY form of life would not exist.
Definition: Any of the elements lithium, sodium, potassium, rubidium, cesium, and francium, occupying Group IA (1) of the periodic table. They are very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides.
Definition: Any of the elements lithium, sodium, potassium, rubidium, cesium, and francium, occupying Group IA (1) of the periodic table. They are very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides.