ప్లాటినం, 00Pt
ప్లాటినం
Pronunciation/ˈplætənəm/ (PLAT-ən-əm)
Appearancegrayish white
Standard atomic weight Ar°(Pt)
ప్లాటినం in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Pd

Pt

Ds
ఇరీడియంప్లాటినంబంగారం
Groupమూస:Infobox element/symbol-to-group/format
Periodperiod 6
Block  d-block
Electron configuration[Xe] 4f14 5d9 6s1
Electrons per shell2, 8, 18, 32, 17, 1
Physical properties
Phase at STPsolid
Melting point2041.4 K ​(1768.3 °C, ​3214.9 °F)
Boiling point4098 K ​(3825 °C, ​6917 °F)
Density (near r.t.)21.45 g/cm3
when liquid (at m.p.)19.77 g/cm3
Heat of fusion22.17 kJ/mol
Heat of vaporization469 kJ/mol
Molar heat capacity25.86 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2330 (2550) 2815 3143 3556 4094
Atomic properties
Oxidation states−3, −2, −1, 0, +1, +2, +3, +4, +5, +6 (a mildly basic oxide)
ElectronegativityPauling scale: 2.28
Atomic radiusempirical: 139 pm
Covalent radius136±5 pm
Van der Waals radius175 pm
Color lines in a spectral range
Spectral lines of ప్లాటినం
Other properties
Natural occurrenceprimordial
Crystal structureface-centered cubic (fcc)
Face-centered cubic crystal structure for ప్లాటినం
Speed of sound thin rod2800 m/s (at r.t.)
Thermal expansion8.8 µm/(m⋅K) (at 25 °C)
Thermal conductivity71.6 W/(m⋅K)
Electrical resistivity105 n Ω⋅m (at 20 °C)
Magnetic orderingparamagnetic
Young's modulus168 GPa
Shear modulus61 GPa
Bulk modulus230 GPa
Poisson ratio0.38
Mohs hardness4–4.5
Vickers hardness549 MPa
Brinell hardness392 MPa
CAS Number7440-06-4
History
DiscoveryAntonio de Ulloa (1735)
First isolationAntonio de Ulloa (1735)
Isotopes of ప్లాటినం
Template:infobox ప్లాటినం isotopes does not exist
 Category: ప్లాటినం
| references

References

  1. "Standard Atomic Weights: Platinum". CIAAW. 2005.
  2. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.


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