SEARCH Articles Figures Tables Alkali metals Potassium Rubidium Sodium Aluminum, sodium, calcium and rubidium on a diphenyl-polyene Aluminum, sodium, calcium and rubidium on poly(-phenylenevinylene) Caesium potassium rubidium sodium Group 1 Lithium Potassium Rubidium Sodium Group potassium rubidium sodium Lithium rubidium sodium Lithium, Sodium, Potassium, Rubidium, Cesium Potassium rubidium sodium Rubidium lithium potassium sodium Sodium rubidium tartarate Sodium rubidium tartrate Sodium, Potassium, Rubidium, Caesium and Sodium, potassium, rubidium and