44 Ru 101.072
Ruthenium
TRANSITION METAL
Phase: Solid
Discovered: Karl Ernst Claus
Block: D
Summary
Ruthenium is a chemical element with symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the other metals of the platinum group, ruthenium is inert to most other chemicals.
Source: WikipediaPhysical Properties
Atomic Mass 101.072 u
Density 12.45 g/cm³
Melting Point 2607 K
Boiling Point 4423 K