Symbol | Pt | Atomic radius: pm | 139 | Fusion: kJ/Mole | 22.17 |
Name | Platinum | Ionic radius: pm | (+4)63 | Boiling point: °C | 3825 |
Atomic number | 78 | Electron affinity | 2.13 | Melting point: °C | 1768 |
Atomic weight | 195.1 | 1st ion potential | 9.0 | Specific Heat Cap: J/(g K) | 0.13 |
Classification | Trans metal | Natural form | Solid | Thermal Cond: W/(cm K) | 0.72 |
Configuration | [Xe]4f145d96s1 | Crystal structure | FCC | Electrical Cond | 0.0966 |
Oxidation states | 2,4 | Density | 21.5 | Abundance: mg/kg-crust | 0.005 |
Electronegativity | 2.2 | Vaporization: kJ/Mole | 510.5 | ||
In 1557, the Italian-French physician Julius Caesar Scaliger made reference to a refractory metal, probably platinum, found between Darién and Mexico. The Spanish mathematician Antonio de Ulloa, in 1735, and the British metallurgist, in 1741, found platinum in South America. | Uses - jewelry, catalysts, thermocouple elements, corrosion-resistant apparatus, coating missle nose cones, jet engine fuel nozzles, dentistry |