Technical data for Manganese

Overview
NameManganese
SymbolMn
Atomic Number25
Atomic Weight54.938049
Density7.47 g/cm3
Melting Point1246 °C
Boiling Point2061 °C

Thermal properties
PhaseSolid
Melting Point1246 °C
Boiling Point2061 °C
Absolute Melting Point1519 K
Absolute Boiling Point2334 K
Heat of Fusion13.2 kJ/mol
Heat of Vaporization220 kJ/mol
Heat of CombustionN/A
Specific Heat479 J/(kg K)[note]
Neel Point100 K
Thermal Conductivity7.8 W/(m K)
Thermal Expansion0.0000217 K-1

Bulk physical properties
Density7.47 g/cm3
Density (Liquid)5.95 g/cm3
Molar Volume7.3545×10-6
Brinell Hardness196 MPa
Mohs Hardness6 MPa
Bulk Modulus120 GPa
Young Modulus198 GPa
Speed of Sound5150 m/s
Thermal Conductivity7.8 W/(m K)
Thermal Expansion0.0000217 K-1

Reactivity
Valence4
Electronegativity1.55
ElectronAffinity0 kJ/mol
Ionization Energies
717.3, 1509, 3248, 4940, 6990, 9220, 1.15×104, 18770, 2.14×104, 23960, 27590, 30330, 33150, 38880, 41987, 109480, 1.181×105, 1.271×105, 1.386×105, 1.485×105, 1.586×105 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A

Classifications
Alternate NamesNone
Nams of AllotropesNone
Blockd
Group7
Period4
Electron Configuration[Ar]3d54s2
ColorSilver
Discovery
1774 in Sweden
Gas phaseN/A
CAS NumberCAS7439-96-5

Electrical properties
Electrical TypeConductor
Electrical Conductivity6.2×105 S/m
Resistivity1.6×10-6 m Ω
Superconducting PointN/A

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility1.21×10-7
Molar Magnetic Susceptibility6.6475×10-9
Volume Magnetic Susceptibility0.00090387

Abundances
% in Universe0.0008%
% in Sun0.001%
% in Meteorites0.27%
% in Earth's Crust0.11%
% in Oceans2×10-7%
% in Humans0.00002%

Atomic dimensions and structure
Atomic Radius161 pm
Covalent Radius139 pm
Van der Waals RadiusN/A
Crystal StructureBody Centered Cubic
Lattice Angles
π/2, π/2, π/2
Lattice Constants
891.25, 891.25, 891.25 pm
Space Group NameI_ 43m
Space Group Number217

Nuclear Properties
Half-LifeStable
LifetimeStable
Stable Isotopes
55Mn
Isotopic Abundances
55Mn100%

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