103
Lr
266
Lawrencium
Element 103 · 266 u · d-block
actinide
The last actinide element. Named after Ernest Lawrence, inventor of the cyclotron.
Phase (STP)
Solid
Melting Point
1627 °C
Boiling Point
—
Density
—
Electronegativity
1.3
Atomic Radius
—
Ionization Energy
470 kJ/mol
Electron Affinity
—
Discovered
1961 · Albert Ghiorso
Electron Configuration
[Rn] 5f14 7s2 7p1
Electron Orbitals
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