Lawrencium
Chemical element
Lawrencium is a synthetic chemical element; it has symbol Lr and atomic number 103. It is named in honor of Ernest Lawrence, inventor of the cyclotron, a device that was used to discover many artificial radioactive elements. Wikipedia
Symbol: Lr
Atomic number: 103
Electron configuration: [Rn] 5f¹⁴ 7s² 7p¹
Atomic mass: 262 u
Discoverer: Lawrence Berkeley National Laboratory
Discovered: February 14, 1961
Melting point: 2,961°F (1,627°C)