Holmium


Electron Configuration

General Properties

Atomic Symbol Ho
Atomic Weight 164.9303 g/mol
Element Number 67
Standard State Strongly Basic
Standard Type Solid
Date of Discovery 1879
Discoverer Cleve

Physical Properties

Oxidation States 3
Boiling Point 2968 K
Melting Point 1747 K
Density 8.80 g/cm³
Electron Configuration [Xe]4f11,6s2
Acid/Base Properties Basic
Crystal Structure Hexagonal
Electronegativity 1.23
Heat of Vaporization 251.04 kJ/mol
Heat of Fusion 17.15 kJ/mol
Electrical Conductivity 1.1 10^6omg-¹cm-¹
Thermal Conductivity 16.2 Wm-¹K-¹ (at 300 K)
Specific Heat Capacity 0.165 Jg-¹K-¹ (at 300 K)
First Ionization Potential 6.02
Atomic Volume 18.7 cm³/mol
Atomic Radius 1.79 Å
Covalent Radius 1.58 Å
Synthetic No