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Technical data for Antimony

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Overview
NameAntimony
SymbolSb
Atomic Number51
Atomic Weight121.76
Density6.697 g/cm3
Melting Point630.63 °C
Boiling Point1587 °C

Thermal properties
PhaseSolid
Melting Point630.63 °C
Boiling Point1587 °C
Absolute Melting Point903.78 K
Absolute Boiling Point1860 K
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion19.7 kJ/mol
Heat of Vaporization68 kJ/mol
Heat of Combustion{"N/A"} J/(kg K)
Specific Heat207 J/(kg K)[note]
Adiabatic IndexN/A
Neel PointN/A
Thermal Conductivity24 W/(m K)
Thermal Expansion0.000011 K-1

Bulk physical properties
Density6.697 g/cm3
Density (Liquid)6.53 g/cm3
Molar Volume0.000018181
Brinell Hardness294 MPa
Mohs Hardness3 MPa
Vickers HardnessN/A
Bulk Modulus42 GPa
Shear Modulus20 GPa
Young Modulus55 GPa
Poisson RatioN/A
Refractive IndexN/A
Speed of Sound3420 m/s
Thermal Conductivity24 W/(m K)
Thermal Expansion0.000011 K-1

Reactivity
Valence5
Electronegativity2.05
ElectronAffinity103.2 kJ/mol
Ionization Energies
834, 1594.9, 2440, 4260, 5.4×103, 1.04×104 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A[note]
Heat of Combustion{"N/A"} J/(kg K)
DOT Hazard Class{N/A}
DOT Numbers"N/A"
EU Number{N/A}
NFPA Fire Rating{N/A}
NFPA Hazards
N/ A
NFPA Health Rating{N/A}
NFPA Reactivity Rating{N/A}
RTECS Number{RTECSCC4025000}
NFPA LabelNFPA Label[note]

Classifications
Alternate NamesStibium
Names of Allotropes
WhiteAntimony, YellowAntimony, BlackAntimony
Blockp
Group15
Period5
Electron Configuration[Kr]4d105s25p3
ColorSilver
Discovery
3000 BC
Gas phaseN/A
CAS NumberCAS7440-36-0
CID Number{CID5354495}
Gmelin Number{N/A}
NSC Number{N/A}
RTECS Number{RTECSCC4025000}

Electrical properties
Electrical TypeConductor
Electrical Conductivity2.5×106 S/m
Resistivity4×10-7 m Ω
Superconducting PointN/A

Magnetic properties
Magnetic TypeDiamagnetic
Curie PointN/A
Mass Magnetic Susceptibility-1.09×10-8
Molar Magnetic Susceptibility-1.327×10-9
Volume Magnetic Susceptibility-0.000073

Abundances
% in Universe4×10-8%
% in Sun1×10-7%
% in Meteorites0.000012%
% in Earth's Crust0.00002%
% in Oceans2×10-8%
% in HumansN/A

Atomic dimensions and structure
Atomic Radius133 pm
Covalent Radius138 pm
Van der Waals RadiusN/A
Crystal StructureSimple Trigonal
Lattice Angles
π/2, π/2, 2 π/3
Lattice Constants
430.7, 430.7, 1127.3 pm
Space Group NameR_ 3m
Space Group Number166

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers4S3/2
Neutron Cross Section5.4
Neutron Mass Absorption0.0016
Known Isotopes
103Sb, 104Sb, 105Sb, 106Sb, 107Sb, 108Sb, 109Sb, 110Sb, 111Sb, 112Sb, 113Sb, 114Sb, 115Sb, 116Sb, 117Sb, 118Sb, 119Sb, 120Sb, 121Sb, 122Sb, 123Sb, 124Sb, 125Sb, 126Sb, 127Sb, 128Sb, 129Sb, 130Sb, 131Sb, 132Sb, 133Sb, 134Sb, 135Sb, 136Sb, 137Sb, 138Sb, 139Sb
Stable Isotopes
121Sb, 123Sb
Isotopic Abundances
121Sb57.21%
123Sb42.79%


Notes on the properties of Antimony:

Specific Heat: Value given for solid phase.

Flash Point: {Missing[NotAvailable]}

N FP ALabel: {Missing[NotAvailable]}

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

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