Symbol
Ru
Atomic Number
44
Atomic Mass
101.07
Protons
44
Neutrons
57
Electrons
44
Type
Transition Metal
Isotopes
Ruthenium-96, Ruthenium-98, Ruthenium-99, Ruthenium-100, Ruthenium-101, Ruthenium-102, Ruthenium-104
Discovery Year
1844
Discovered By
Karl Ernst Claus
Group
8
Period
5
Boiling Point
7322°F
Melting Point
4510°F
Electron Configuration
[Kr] 5s¹ 4d⁷
Density (g/cm³)
12.37
Crystal Structure
Hexagonal
Magnetism
Diamagnetic
Abundance in Earth's Crust
0.0007%
Phase at Room Temperature
Solid