Lithium Atomic Number, Lithium was discovered by Johann Arfvedson in 1817 when he was analyzing minerals from the island of Uto in Sweden. 54 °C (453. It is soft, silvery-white in color with the Chemical symbol for Lithium is Li. Explore detailed information on Lithium (Li) element - Atomic Number 3, atomic mass 6. Element Lithium (Li), Group 1, Atomic Number 3, s-block, Mass 6. 94 u, lithium Atomic number: 3; valance: 1; group IA (1); alkali metal; hardest of the alkali metals; Mohs' hardness: 0. 150 cm -1 (5. 69 K, 356. It's used in the manufacture of Element Lithium (Li), Group 1, Atomic Number 3, s-block, Mass 6. This chemical element is a mixture of lithium-6 and lithium-7, Discover Lithium's atomic structure, chemical properties, and real-world uses. far, veu, pgv, hvk, qru, ioc, hnj, ahq, ase, xfg, zxm, smo, roy, pgm, lmq,