Periodic Table of the Elements

Chemical & Physical Properties of Platinum

Platinum

Latin name	Platinium
English name	Platinum
chemical symbol	Pt
atomic number	78
relative atomic mass	195,08
period	6
group	VIII.B
classification	transition metals
discovery year	1735
discoverer	Wood
melting point [°C]	1772
boiling point [°C]	3827
density [g cm-3]	21,45
density at melting point [g cm-3]	19,77
electronegativity [Pauling]	2,28
oxidation states	I, II, III, IV, VI
electron configuration	[Xe]4f14 5d9 6s1
atomic radius [pm]	177
covalent radius [pm]	128
specific heat [J g-1K-1]	0,13
heat of fusion [kJ mol-1]	19,6
thermal conductivity [W m-1 K-1]	72
el. conductivity [S m-1]	9,4.106
1. ionizing potential [eV]	9,0
2. ionizing potential [eV]	18,563
Mohs hardness	3,5
Vickers hardness [MPa]	549
Brinell hardness [MPa]	392
shear modulus [GPa]	61
Young's modulus [GPa]	168
state at normal conditions	solid

Resources

• BARTHELMY, David. Mineral Species containing Platinum. In: Mineralogy database [online]. 2010 [cit. 2012-07-02]. Available from: http://webmineral.com/chem/Chem-Pt.shtml
• GINZBURG, Susanna. Analitičeskaja chimija platinovych metallov. Moskva: Nauka, 1972.
• GUNN, Gus; BENHAM, Antony; et al. Platinum. Keyworth, Nottingham: British Geological Survey, 2009.
• HUSTED, Robert; et al. Platinum. In: LOS ALAMOS NATIONAL SECURITY. Los Alamos National Lab [online]. 2011 [cit. 2012-05-11]. Available from: http://periodic.lanl.gov/78.shtml
• LIDE, D. R. Handbook of Chemistry and Physics, 85th Ed. New York: CRC Press, 2005. ISBN 9780849304859.
• LIVINGSTONE, Stanley. Chimija rutenija, rodija, palladija, osmija, iridija, platiny. Moskva: Mir, 1978.
• LOFERSKI, Patricia. Platinum - group metals. In: U.S. GEOLOGICAL SURVEY. Mineral Commodity Summaries [online]. 2013 [cit. 2013-03-03]. Available from: http://minerals.usgs.gov/.../mcs-2013-plati.pdf
• STWERTKA, Albert. A Guide to the Elements. Oxford: University Press, 2002. ISBN 0-19-515027-9.

iridium ← platinum → gold

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