Matching Pairs TCA: Chemistry: Alk and Alk EarthOnline version Alkali Metals and Alkaline Earth Metals by Elvira Trevino 1 Na 2 Ca 3 Mg 4 Rb 5 Sr 6 Li 7 Fr 8 K 9 Ba 10 Be 11 Ra 12 Cs Sodium Potassium Radium Cesium Calcium Barium Lithium Francium Rubidium Strontium Magnesium Beryllium