Gadolinium
Symbol
Gd
Atomic Number
64
Atomic Weight
157.25
Element Classification
Discovered By
Jean de Marignac
Discovery Date
1880 (Switzerland)
Name Origin
Named after the mineral gadolinite.
Density(g/cc)
7.900
Melting Point
1586
Boiling Point(K)
3539
Appearance
Soft, ductile, silvery-white metal
Atomic Radius(pm)
179
Atomic Volume(cc/mol)
19.9
Covalent Radius(pm)
161
Ionic Radius
93.8 (+3e)
Specific Heat
0.230
Fusion Heat
n/a
Evaporation Heat(kj/mol)
398
Thermal Conductivity(@25°C W/m K)
(10.5)
Debye Temperature
n/a
Pauling Negativity Number
1.20
First Ionizing Energy(kj/mol)
594.2
Oxidation States
3
Electronic Configuration
[Xe] 4f7 5d1 6s2
Lattice Structure
Hexagonal(HEX)
Lattice Constant
3.640
Lattice C/A Ratio
1.588
