Technical data for Antimony

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
Heat of Fusion19.7 kJ/mol
Heat of Vaporization68 kJ/mol
Heat of CombustionN/A
Specific Heat207 J/(kg K)[note]
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
Bulk Modulus42 GPa
Shear Modulus20 GPa
Young Modulus55 GPa
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

Classifications
Alternate NamesStibium
Nams of Allotropes
WhiteAntimony, YellowAntimony, BlackAntimony
Blockp
Group15
Period5
Electron Configuration[Kr]4d105s25p3
ColorSilver
Discovery
3000 BC
Gas phaseN/A
CAS NumberCAS7440-36-0

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

Magnetic properties
Magnetic TypeDiamagnetic
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
Stable Isotopes
121Sb, 123Sb
Isotopic Abundances
121Sb57.21%
123Sb42.79%

Notes on the properties of Antimony:
Specific Heat: Value given for solid phase.