Platinum
Symbol: Pt

Atomic Number: 78
Atomic Weight: 195.08
Protons: 78
Neutrons: 117
Electrons: 78
Group: VIIIB

Brief Description:
Platinum is silvery-white in appearence, and when pure is malleable and ductile. This metal does not oxidize in air. It is valuable both as a precious metal and as an industrial catalyst.