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

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  • $\begingroup$ 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. $\endgroup$ – Ivan Neretin Apr 16 '16 at 13:37
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    $\begingroup$ @IvanNeretin Righto. The whole cluster of them has a name: Platinum group metals $\endgroup$ – hBy2Py Apr 16 '16 at 16:54