Ruthenium

Transition metal

Symbol: Ru

Atomic Number: 44

Standard State: Solid

Atomic Mass: 101.1

Electron Configuration: [Kr]5s1 4d7

Electronegativity: 2.2

Atomic Radius: 207

Ionization Energy: 7.361

Melting Point: 2607

Boiling Point: 4423

Density: 12.1

Year Discovered: 1827