Welcome to the Periodic Table of the Elements power trail; which begins at Mount Henry Bridge and continues south down the freeway cycle path. Please stay safe and enjoy the power trail.
Ruthenium is a hard, white metal. It does not tarnish at room temperatures, but oxidises in air at about 800°C. The metal is not attacked by hot or cold acids or aqua regia, but when potassium chlorate is added to the solution, it oxidises explosively.
Ruthenium, rhodium, palladium, osmium, iridium, and platinum together make up a group of elements referred to as the platinum group metals (PGM).
Source: Webelements