Holmium
Symbol
Ho
Atomic Number
67
Atomic Weight
164.93032
Element Classification
Discovered By
J.L. Soret
Discovery Date
1878 (Switzerland)
Name Origin
Holmia, the Latinized name for Stockholm, Sweden.
Density(g/cc)
8.795
Melting Point
1747
Boiling Point(K)
2968
Appearance
Fairly soft, malleable, lustrous, silvery metal
Atomic Radius(pm)
179
Atomic Volume(cc/mol)
18.7
Covalent Radius(pm)
158
Ionic Radius
89.4 (+3e)
Specific Heat
0.164
Fusion Heat
n/a
Evaporation Heat(kj/mol)
301
Thermal Conductivity(@25°C W/m K)
(16.2)
Debye Temperature
n/a
Pauling Negativity Number
1.23
First Ionizing Energy(kj/mol)
574
Oxidation States
3
Electronic Configuration
[Xe] 4f11 6s2
Lattice Structure
Hexagonal(HEX)
Lattice Constant
3.580
Lattice C/A Ratio
1.570
