Basic Information

Name: Ruthenium 
Symbol: Ru 
Atomic Number: 44 
Atomic Mass: 101.07 amu 
Melting Point: 2250.0 °C (2523.15 K, 4082.0 °F) 
Boiling Point: 3900.0 °C (4173.15 K, 7052.0 °F) 
Number of Protons/Electrons: 44 
Number of Neutrons: 57 
Classification: Transition Metal 
Crystal Structure: Hexagonal 
Density @ 293 K: 12.2 g/cm3 
Color: silvery
Date of Discovery: 1844 
Discoverer: Karl Klaus 
Name Origin: From the Latin word Ruthenia (Russia) 
Uses: platinum alloys 
Obtained From: pentlandite, pyroxinite