Lutetium

Images

Image

Attribution: Alchemist-hp

Animated Lutetium

History

Lutetia is the ancient name for Paris. In 1907, Urbain described a process by which Marignac's ytterbium (1879) could be separated into the two elements, ytterbium (neoytterbium) and lutetium. These elements were identical with "aldebaranium" and "cassiopeium," independently discovered at this time. The spelling of the element was changed from lutecium to lutetium in 1949.

Uses

Stable lutetium nuclides, which emit pure beta radiation after thermal neutron activation, can be used as catalysts in cracking, alkylation, hydrogenation, and polymerization. Virtually no other commercial uses have been found yet for lutetium.

General Info

AtomicNumber
71
Symbol
Lu
Name
Lutetium

Atomic Info

Appearance
AtomicWeight
174.9668(1)
Color
00AB24
ElectronicConfiguration
[Xe] 4f14 5d1 6s2
ElectronegativityInPauling
1.27
AtomicRadiusInPM
160
IonRadiusInPM
86.1 (+3)
VanDerWaalsRadiusInPM
IEinKJmol
524
EAinKJmol
-50
OxidationStates
3
StandardState
solid
BondingType
metallic
MeltingPoint
1936
BoilingPoint
3675
Density
9.84
State
Lanthanide
DiscoveredYear
1907