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[ ? ] Alkali metal:
Soft, silver-white metal. Highly reactive and flammable.
Batteries, medicine, industrial chemicals, rocket propellants
Corrosive, highly flammable

Lithium is a chemical element, having the chemical symbol Li. Its atomic number (the number of protons) is 3. It has a standard atomic weight of 6.941 g•mol −1, and is typically found as a solid in its elemental form.

Lithium is considered to be a member of the "Alkali metal" class of element. At a pressure of 101.325 kPa, it has a boiling point of 1342 °C, and a melting point of 180.5 °C

Substance withdrawal syndrome

Substance withdrawal syndrome may occur after discontinuing lithium.[1][2]

Nuclear engineering

6Li, usually as lithium hydride, is the starting material to generate tritium in the Secondary of operational thermonuclear weapons.[3]


  1. Cavanagh J, Smyth R, Goodwin GM (2004). "Relapse into mania or depression following lithium discontinuation: a 7-year follow-up.". Acta Psychiatr Scand 109 (2): 91-5. PMID 14725588.
  2. Viguera AC, Nonacs R, Cohen LS, Tondo L, Murray A, Baldessarini RJ (2000). "Risk of recurrence of bipolar disorder in pregnant and nonpregnant women after discontinuing lithium maintenance.". Am J Psychiatry 157 (2): 179-84. PMID 10671384.
  3. Restricted Data Declassification Decisions 1946 to the Present, U.S. Department of Energy, 1 January 2001, RDD-7, Section II.P