Pt, or platinum, is a dense, malleable metal known for its silvery-white appearance. It is a member of the platinum group metals and is highly resistant to corrosion and tarnishing. Due to these properties, Pt is often used in jewelry, laboratory equipment, and catalytic converters in vehicles. In addition to its industrial applications, Pt is also valued in the field of medicine. It is used in certain chemotherapy drugs, such as cisplatin, to treat various types of cancer. Its biocompatibility makes it suitable for medical devices and implants as well.