Malleable platinum

Wollaston devised a method for making platnium malleable despite its inertness and high melting point. He kept the method secret. Working with platnium he also discovered two other metals very similar in properties to it. These were palladium and rhodium.
 William Hyde Wollaston England 1801 Malleable platinum

Wollaston devised a method for making platnium malleable despite its inertness and high melting point. He kept the method secret. Working with platnium he also discovered two other metals very similar in properties to it. These were palladium and rhodium.