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Technical data for Manganese

Click any property name to see plots of that property for all the elements.

Overview
NameManganese
SymbolMn
Atomic Number25
Atomic Weight54.938044
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
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion13.2 kJ/mol
Heat of Vaporization220 kJ/mol
Specific Heat479 J/(kg K)[note]
Adiabatic IndexN/A
Neel Point100 K
Thermal Conductivity7.7 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
Vickers HardnessN/A
Bulk Modulus120 GPa
Shear ModulusN/A
Young Modulus198 GPa
Poisson RatioN/A
Refractive IndexN/A
Speed of Sound5150 m/s
Thermal Conductivity7.7 W/(m K)
Thermal Expansion0.0000217 K-1

Reactivity
Valence4
Electronegativity1.55
ElectronAffinity0 kJ/mol
Ionization Energies
717.3, 1509, 3248, 4940, 6990, 9220, 11500, 18770, 21400, 23960, 27590, 30330, 33150, 38880, 41987, 109480, 118100, 127100, 138600, 148500, 158600 kJ/mol

Health and Safety
DOT Hazard Class
4.1
DOT Numbers3089
RTECS NumberN/A
NFPA LabelN/A

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockd
Group7
Period4
SeriesTransition Metal
Electron Configuration[Ar]4s23d5
ColorSilver
Discovery
1774 in Sweden
Gas phaseN/A
CAS NumberCAS7439-96-5
CID Number
CID23930
RTECS NumberN/A

Electrical properties
Electrical TypeConductor
Electrical Conductivity620000 S/m
Resistivity1.6×10-6 m Ω
Superconducting PointN/A

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility1.21×10-7 m3/Kg
Molar Magnetic Susceptibility6.6475×10-9 m3/mol
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
Decay ModeN/A
Quantum Numbers6S5/2
Neutron Cross Section13.3
Neutron Mass Absorption0.0083
Known Isotopes
44Mn, 45Mn, 46Mn, 47Mn, 48Mn, 49Mn, 50Mn, 51Mn, 52Mn, 53Mn, 54Mn, 55Mn, 56Mn, 57Mn, 58Mn, 59Mn, 60Mn, 61Mn, 62Mn, 63Mn, 64Mn, 65Mn, 66Mn, 67Mn, 68Mn, 69Mn
Stable Isotopes
55Mn
Isotopic Abundances
55Mn100%


Notes on the properties of Manganese:

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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