ESL Saigon logo



Name: Ruthenium
Symbol: Ru
Number of Energy Levels: 5
Electrons on the outer energy level: 1
Atomic number: 44
Atomic Mass: 101.07 Amu (Atomic Mass Units)
Protons/Electrons: 44
Neutrons: 57
Density: 12.2 g/cm3
Classification: Transition Metal

Ruthenium | Chemical elements

Ruthenium was discovered in 1844 by Karl Klaus. Ruthenium’s name derives from the Latin word "Ruthenia" which means "Russia". Ruthenium’s melting point is at 2250.0 °C (2523.15 K, 4082.0 °F) and its boiling point is at 3900.0 °C (4173.15 K, 7052.0 °F).

Top 8 interesting facts about Ruthenium

  1. Ruthenium is a hard white metal.
  2. Ruthenium is part of platinum group; therefore it is inert to most chemicals.
  3. Ruthenium is attacked by halogens (at high temperatures) but it is not attacked by acids.
  4. Ruthenium is a component of platinum ores and it is also obtained as a by-product of nickel and cooper mining.
  5. Twenty tones of Ruthenium are produced annually.
  6. Ruthenium is used in production of wear-resistant electrical contacts, thick-film resistors, and platinum alloys.
  7. Ruthenium has seven stable isotopes occurring naturally.
  8. Ruthenium is the 74th most abundant element on Earth and it is mainly found in the Ural Mountains, South Africa, and in North and South America.

Back to index