👉 Lithium, also known as Li, is a chemical element with atomic number 1. It is a soft, white, and silvery-white metalloid that has a high melting point of about 307°C at standard pressure. Lithium is found in many minerals such as lithium carbonate and lithium nitride, and it is also used in batteries, light bulbs, and other applications. Lithium is named after the Latin word "lithus," which means "stone"