Technical data for Curium

Overview
NameCurium
SymbolCm
Atomic Number96
Atomic Weight247[note]
Density13.51 g/cm3
Melting Point1345 °C
Boiling Point3110 °C

Thermal properties
PhaseSolid
Melting Point1345 °C
Boiling Point3110 °C
Absolute Melting Point1618 K
Absolute Boiling Point3383 K
Heat of FusionN/A
Heat of VaporizationN/A
Heat of CombustionN/A
Specific HeatN/A
Thermal ConductivityN/A
Thermal ExpansionN/A

Bulk physical properties
Density13.51 g/cm3
Density (Liquid)N/A
Molar Volume0.0000182828
Thermal ConductivityN/A
Thermal ExpansionN/A

Reactivity
Valence4
Electronegativity1.3
ElectronAffinityN/A
Ionization Energies
581 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A

Classifications
Alternate NamesNone
Nams of AllotropesNone
Blockf
GroupN/A
Period7
Electron Configuration[Rn]5f76d17s2
ColorSilver
Discovery
1944 in United States
Gas phaseN/A
CAS NumberCAS7440-51-9

Electrical properties
Electrical TypeN/A
Electrical ConductivityN/A
ResistivityN/A
Superconducting PointN/A

Magnetic properties
Magnetic TypeN/A
Curie PointN/A
Mass Magnetic SusceptibilityN/A
Molar Magnetic SusceptibilityN/A
Volume Magnetic SusceptibilityN/A

Abundances
% in UniverseN/A
% in SunNone
% in MeteoritesNone
% in Earth's CrustNone
% in OceansNone
% in HumansNone

Atomic dimensions and structure
Atomic RadiusN/A
Covalent RadiusN/A
Van der Waals RadiusN/A
Crystal StructureSimple Hexagonal
Lattice Angles
π/2, π/2, 2 π/3
Lattice Constants
349.6, 349.6, 1133.1 pm
Space Group NameP63/mmc
Space Group Number194

Nuclear Properties
Half-Life1.56×107 y
Lifetime2.25×107 y

Notes on the properties of Curium:
Atomic Weight: Atomic mass number given for longest lived isotope.