Element 103 is known as lawrencium, a synthetic element that was first produced in 1961. It is part of the actinide series and is represented by the symbol Lr on the periodic table. Lawrencium is highly radioactive and has no stable isotopes, with its most stable isotope, Lr-262, having a half-life of about 11 hours. Due to its short half-life, lawrencium is not found in nature and must be created in a laboratory setting. It is primarily used for research purposes in nuclear chemistry and physics, helping scientists understand the properties of heavy elements and their interactions.