The Group 1 elements


Sodium and potassium are abundant in nature and can be found as salts such as chlorides. Lithium is a rare element that is found primarily in the mineral spodumene LiAlSi2O6. Rubidium and caesium are even rarer, but they can be found in reasonable amounts in minerals like zeolite pollucite (Cs2Al2Si4O12.nH2O). Electrolysis of molten metal chloride extracts sodium and lithium metals. Rubidium and caesium are obtained by reacting metal chloride with calcium or barium and potassium is obtained by reacting KCl with sodium metal.

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