Platinum
Atomic number: 78
Atomic weight: 195.084
Melting point: 3,215 degrees F
Specific gravity: 21.4 when pure
Hardness: 4-4.5
What is Platinum ?
Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata “silver.