Atomic NumberAtomic Number of Platinum
Atomic Number of Platinum is 78.
Chemical symbol for Platinum is Pt. Number of protons in Platinum is 78. Atomic weight of Platinum is 195.084 u or g/mol. Melting point of Platinum is 1772 °C and its the boiling point is 3827 °C.
» Boiling Point » Melting Point » Abundant » State at STP » Discovery YearAbout Platinum
Platinum is a light silvery hard metal which is very resistive to corrosion, and it has been known for centuries, at least since per-Mayan epochs. The name of this element takes its origins from the Spanish word meaning little silver. Platinum has no importance for biological life on the planet, and it can be found in its pure form and in compounds with other elements (mainly in South America). It is a precious metal which is more expensive than gold. Platinum has plenty of applications, including producing LCD, optical fibers, some parts of electronic devices, pacemakers, jewelry, dental fillings, as well as for some cancer treatments.
Properties of Platinum Element
| Atomic Number (Z) | 78 |
|---|---|
| Atomic Symbol | Pt |
| Group | 10 |
| Period | 6 |
| Atomic Weight | 195.084 u |
| Density | 21.46 g/cm3 |
| Melting Point (K) | 2041.4 K |
| Melting Point (℃) | 1772 °C |
| Boiling Point (K) | 4098 K |
| Boiling Point (℃) | 3827 °C |
| Heat Capacity | 0.133 J/g · K |
| Abundance | 0.005 mg/kg |
| State at STP | Solid |
| Occurrence | Primordial |
| Description | Transition metal |
| Electronegativity (Pauling) χ | 2.28 |
| Ionization Energy (eV) | 8.9587 |
| Atomic Radius | 135pm |
| Covalent Radius | 128pm |
| Van der Waals Radius | 175 |
| Valence Electrons | 1 |
| Year of Discovery | 1557 |
| Discoverer | Scaliger |