Symbol: Lr
Atomic number: 103
Category: actinides
Group: n/a
Period: 7
Block: f
Atomic weight: (262) g/mol
Electrons per shell: 2, 8, 18, 32, 32, 8, 3
CAS number: 22537-19-5
Phase: presumably a solid
Density: unknown
Melting point: unknown
Boiling point: unknown
Crystal structure: unknown
Oxidation states: 3
Electronegativity: unknown
Name's origin: Ernest O. Lawrence
Name's meaning: in honor of the inventor of the cyclotron
Facts:
- is a radioactive synthetic element
- twelve isotopes of lawrencium have been synthesized with lawrencium-262 being the longest-lived and heaviest, with a half-life of 216 minutes
- was produced by bombarding a three milligram target composed of three isotopes of californium with boron-10 and boron-11 ions
- the appearance of this element is unknown, however it is most likely silvery-white or gray and metallic
- if sufficient amounts of lawrencium were produced, it would pose a radiation hazard
- its symbol was formerly known as Lw
- is a synthetic element and has no known uses