Ruthenium is a rare, silvery-white metal that belongs to the platinum group of elements. It is denoted by the chemical symbol Ru and has an atomic number of 44. Found primarily in ores of platinum and nickel, ruthenium is often used in electronics, as well as in the production of hard alloys and catalysts. This metal is known for its resistance to corrosion and its ability to enhance the properties of other metals when alloyed. Ruthenium compounds are also utilized in various chemical reactions and have applications in the fields of chemistry and materials science.