1. Lithium carbonate (Li₂CO₃): This is a white, crystalline powder used primarily in the treatment of bipolar disorder.
2. Lithium hydroxide (LiOH): This is a strong base often used in the production of ceramics and as a component in lithium-ion batteries.
3. Lithium chloride (LiCl): This is a white, deliquescent (absorbs moisture from the air) salt used in batteries, welding fluxes, and as a drying agent.
There are many other lithium compounds, but these three are some of the most common and important.