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