Template:Infobox platinum

Platinum, ₇₈Pt

File:Platinum crystals.jpg
Platinum
Pronunciation	/ˈplætənəm/ ​(PLAT-ən-əm)
Appearance	silvery white
Standard atomic weight Ar°(Pt)
	195.084±0.009 195.08±0.02 (abridged)
Platinum 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson Pd ↑ Pt ↓ Ds iridium ← platinum → gold
Atomic number (Z)	78
Group	group 10
Period	period 6
Block	d-block
Electron configuration	[Xe] 4f14 5d9 6s1
Electrons per shell	2, 8, 18, 32, 17, 1
Physical properties
Phase at STP	solid
Melting point	2041.4 K ​(1768.3 °C, ​3214.9 °F)
Boiling point	4098 K ​(3825 °C, ​6917 °F)
Density (at 20° C)	21.452 g/cm3
when liquid (at m.p.)	19.77 g/cm3
Heat of fusion	22.17 kJ/mol
Heat of vaporization	510 kJ/mol
Molar heat capacity	25.86 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	common: +2, +4 −3,? −2,? −1,? 0,? +1,? +3,? +5, +6
Electronegativity	Pauling scale: 2.28
Ionization energies	1st: 870 kJ/mol 2nd: 1791 kJ/mol
Atomic radius	empirical: 139 pm
Covalent radius	136±5 pm
Van der Waals radius	175 pm
Color lines in a spectral range Spectral lines of platinum
Other properties
Natural occurrence	primordial
Crystal structure	​face-centered cubic (fcc) (cF4)
Lattice constant	Face-centered cubic crystal structure for platinum a = 392.36 pm (at 20 °C)
Thermal expansion	8.93×10−6/K (at 20 °C)
Thermal conductivity	71.6 W/(m⋅K)
Electrical resistivity	105 nΩ⋅m (at 20 °C)
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+201.9 × 10−6 cm3/mol (290 K)
Tensile strength	125–240 MPa
Young's modulus	168 GPa
Shear modulus	61 GPa
Bulk modulus	230 GPa
Speed of sound thin rod	2800 m/s (at r.t.)
Poisson ratio	0.38
Mohs hardness	3.5
Vickers hardness	400–550 MPa
Brinell hardness	300–500 MPa
CAS Number	7440-06-4
History
Discovery	Antonio de Ulloa (1735)
Isotopes of platinum
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 190Pt 0.0120% 4.83×1011 y α 186Os 192Pt 0.782% stable 193Pt synth 50 y ε 193Ir 194Pt 32.9% stable 195Pt 33.8% stable 196Pt 25.2% stable 198Pt 7.36% stable

Pt · Platinum
Ir ← ibox Ir	iso 78 Pt  [] IB-Pt [] IBisos []	→ Au ibox Au
File:Symbol category class.svg cat:Pt (0) File:Symbol category class.svg cat:Pt-isotopes (0) File:Commons-logo.svg Commons File:Wikidata-logo.svg Wikidata:Q880 File:Wiktionary-logo.svg Wiktionary
indexes by PT (page)

child table, as reused in {IB-Pt}
Main isotopes of platinum
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 190Pt 0.0120% 4.83×1011 y α 186Os 192Pt 0.782% stable 193Pt synth 50 y ε 193Ir 194Pt 32.9% stable 195Pt 33.8% stable 196Pt 25.2% stable 198Pt 7.36% stable

Data sets read by {{Infobox element}}
Name and identifiers
Symbol etymology (11 non-trivial)
Top image (caption, alt)	caption: alt:
Pronunciation
Allotropes (overview)
Group (overview)
Period (overview)
Block (overview)
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Isotopes
Standard atomic weight
most stable isotope
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (0) · (this table: )

References

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