chemical element with symbol Pt and atomic number 78

Platinum is a soft, heavy, white metal. It is a precious metal. It usually costs more than gold. In chemistry, platinum is element number 78, and its atoms have an atomic weight of 195 a.m.u.. The symbol for platinum is Pt, from Spanish platina meaning "little silver".

Some platinum nuggets from nature.

Platinum is very malleable and ductile, which means it can be hammered into thin sheets and it can be pulled into wire. Platinum is very stable. Acids do not affect platinum.

The most common use of Platinum is in a vehicle's catalytic converter.