Lawrencium (Lr)
"The Cyclotron, a hero named for the inventor of the machine that created so many new elements."
A memorable persona to anchor Lr in your mind.
Synthetic
Grams per cm³
1627
Celsius (°C)
N/A
Radius (pm)
Daily Life Link
Lawrencium has no everyday connection, used only in research.
Discovery & History
Year Discovered
1961
Discovered By
Albert Ghiorso
Origin of Name
"Lawrencium is named after Ernest O. Lawrence the inventor of the cyclotron."
Technical Properties
Atomic Mass
[262] u
Standard State
solid
Boiling Point
N/A
Electron Configuration
[Rn] 5f147s27p1
1st Ionization Energy
N/A
Electron Affinity
N/A
Oxidation States
"Lawrencium is a synthetic, radioactive metal."
Did You Know?
It is named in honor of Ernest O. Lawrence, the Nobel laureate who invented the cyclotron particle accelerator, which was crucial for discovering many synthetic elements.
It is the final element in the actinide series of the periodic table.
It is extremely difficult to produce, and its chemical properties have been studied on a one-atom-at-a-time basis.
Its most stable isotope has a half-life of about 11 hours.