Lithium is a chemical element; it has symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the least dense metal and the least dense solid element.
Lithium ingots with a thin layer of black nitride tarnish
Nova Centauri 2013, a stellar nova from which lithium was detected
Johan August Arfwedson is credited with the discovery of lithium in 1817.
Certain lithium compounds, also known as lithium salts, are used as psychiatric medication, primarily for bipolar disorder and for major depressive disorder. Lithium is taken orally.
Lithium
…lithium-ion batteries. Batteries alone consume more than three-quarters of lithium production. Lithium is present in biological systems in trace amounts. Lithium-based drugs are useful as a mood stabilizer and antidepressant in the treatment of mental illness such as bipolar disorder. The alkali metals are also called the…
A bottle of lithium medicine containing 300 mg capsules of lithium carbonate
A 7Up Lithiated Lemon Soda bottle cap.