chemical element with symbol Ru and atomic number 44

Ruthenium is a chemical element. It has the chemical symbol Ru. It has the atomic number 44. It is a rare metal. It is silver white. In chemistry it is placed in a group of metal elements named the transition metals. It is also part of the platinum group. Ruthenium is found in platinum ores.

Ruthenium is used as a catalyst in some platinum alloys.