# Why is platinum an excellent catalyst in comparison with similar metals? [duplicate]

What is special about platinum structure which actively participate in catalytic reactions while similar metals with similar atomic structures cannot.

• Indeed, similar metals with similar structures ($\ce{Pd,\;Ir}$) are just about as good in many catalytic reactions, so $\ce{Pt}$ is not all that exceptional. Apr 16 '16 at 13:37
• @IvanNeretin Righto. The whole cluster of them has a name: Platinum group metals Apr 16 '16 at 16:54