How Do We Get It? – Rubidium
How Do We Get It? – Rubidium. Rubidium: The Versatile Element with an Elusive Origin. Rubidium, a silvery-white alkali metal, holds a unique place in the periodic table. With an atomic number of 37, it is not as well-known as its popular siblings, sodium and potassium. Discovered in 1861 by Robert Bunsen and Gustav Kirchhoff, this element’s origin and properties have fascinated scientists for decades.