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Platinum Element Properties, Transition metals Group, Periodic Table of the Elements

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Platinum

Platinum Element Properties

d77
Ir
Iridium
d78
Pt
Platinum
d79
Au
Gold
General
NamePlatinum
SymbolPt
Number78
Group Number10
GroupTransition metals
Blockd
Density21.45 g/cm3
Atomic Weight195.09 g/mol
Atomic Volume9.10 cm3/mol
Discover1748


States
StateSolid
Melting Point2041.4 K
Boiling Point4098 K
Triple PointNil
Critical PointNil
Heat of Fusion22.17 kJ/mol
Heat of Vaporization469 kJ/mol


Energies
First Ionization Energy870 kJ/mole
Second Ionization Energy1791 kJ/mole
Third Ionization EnergyNil
Electronegativity2.28
Electron Affinity205.3 kJ/mole
Specific Heat0.13 J/gK
Heat Atomization565 kJ/mole atoms


Oxidation and Electrons
Shells2,8,18,32,17,1
Electron Configuration[Xe] 4f14 5d9 6s1
Minimum Oxidation Number0
Maximum Oxidation Number6
Minimum Common Oxidation Number0
Maximum Common Oxidation Number4


Appearance and Characteristics
Crystal Structurecubic face centered
CharacteristicsInert, ductile
Colorsilvery-white
Usesjewelry, catalysts
Hardness4.3 mohs
ToxicityNone


Reactions
Reaction with AirNone
Reaction with 6M HClNone
Reaction with 15M HNO3None
Reaction with 6M NaOHNone


Other Forms
Number of Isotopes6
HydrideNone
OxidePtO2
ChloridePtCl2 PtCl4


Radius
Atomic Radius139 pm
Ionic Radius (1+ ion)Nil
Ionic Radius (1- ion)Nil
Ionic Radius (2+ ion)94 pm
Ionic Radius (2- ion)Nil
Ionic Radius (3+ ion)Nil


Conductivity
Thermal Conductivity71.6 J/m-sec-deg
Electrical Conductivity94.34 1/mohm-cm
Polarizability6.5 A3


Abundance
Sourcenickel ores (sulfides)
Relation Abundance Solar System0.127 log
Abundance Earth's Crust-2.3 log


d77
Ir
Iridium
d78
Pt
Platinum
d79
Au
Gold




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