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Technical data for Indium

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Overview
NameIndium
SymbolIn
Atomic Number49
Atomic Weight114.818
Density7.31 g/cm3
Melting Point156.6 °C
Boiling Point2072 °C

Thermal properties
PhaseSolid
Melting Point156.6 °C
Boiling Point2072 °C
Absolute Melting Point429.75 K
Absolute Boiling Point2345 K
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion3.26 kJ/mol
Heat of Vaporization230 kJ/mol
Heat of CombustionN/A
Specific Heat233 J/(kg K)[note]
Adiabatic IndexN/A
Neel PointN/A
Thermal Conductivity82 W/(m K)
Thermal Expansion0.0000321 K-1

Bulk physical properties
Density7.31 g/cm3
Density (Liquid)7.02 g/cm3
Molar Volume0.000015707
Brinell Hardness8.83 MPa
Mohs Hardness1.2 MPa
Vickers HardnessN/A
Bulk ModulusN/A
Shear ModulusN/A
Young Modulus11 GPa
Poisson RatioN/A
Refractive IndexN/A
Speed of Sound1215 m/s
Thermal Conductivity82 W/(m K)
Thermal Expansion0.0000321 K-1

Reactivity
Valence3
Electronegativity1.78
ElectronAffinity28.9 kJ/mol
Ionization Energies
558.3, 1820.7, 2704, 5210 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A
Heat of CombustionN/A
DOT Hazard Class4.1
DOT Numbers3089
EU NumberN/A
NFPA Fire RatingN/A
NFPA HazardsN/A
NFPA Health RatingN/A
NFPA Reactivity RatingN/A
RTECS NumberRTECSNL1050000
NFPA LabelN/A

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockp
Group13
Period5
Electron Configuration[Kr]4d105s25p1
ColorSilver
Discovery
1863 in Germany
Gas phaseN/A
CAS NumberCAS7440-74-6
CID NumberCID5359967
Gmelin NumberN/A
NSC NumberN/A
RTECS NumberRTECSNL1050000

Electrical properties
Electrical TypeConductor
Electrical Conductivity1.2×107 S/m
Resistivity8×10-8 m Ω
Superconducting Point3.41

Magnetic properties
Magnetic TypeDiamagnetic
Curie PointN/A
Mass Magnetic Susceptibility-1.4×10-9
Molar Magnetic Susceptibility-1.61×10-10
Volume Magnetic Susceptibility-0.0000102

Abundances
% in Universe3×10-8%
% in Sun4×10-7%
% in Meteorites4.4×10-6%
% in Earth's Crust0.000016%
% in Oceans1×10-11%
% in HumansN/A

Atomic dimensions and structure
Atomic Radius156 pm
Covalent Radius144 pm
Van der Waals Radius193 pm
Crystal StructureCentered Tetragonal
Lattice Angles
π/2, π/2, π/2
Lattice Constants
325.23, 325.23, 494.61 pm
Space Group NameI4/mmm
Space Group Number139

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers2P1/2
Neutron Cross Section194
Neutron Mass Absorption0.06
Known Isotopes
97In, 98In, 99In, 100In, 101In, 102In, 103In, 104In, 105In, 106In, 107In, 108In, 109In, 110In, 111In, 112In, 113In, 114In, 115In, 116In, 117In, 118In, 119In, 120In, 121In, 122In, 123In, 124In, 125In, 126In, 127In, 128In, 129In, 130In, 131In, 132In, 133In, 134In, 135In
Stable Isotopes
113In
Isotopic Abundances
113In4.29%
115In95.71%


Notes on the properties of Indium:

Specific Heat: Value given for solid phase.

Up to date, curated data provided by
Mathematica's ElementData function from Wolfram Research, Inc.

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