Curium Element Properties

Curium

f95
Am
Americium
f96
Cm
Curium
f97
Bk
Berkelium
General
Name(Curium)
Symbol(Cm)
Number(96)
Group Number(NA)
Group(Rare Earth, Actinides)
Block(f)
Density(13.5 g/cm3)
Atomic Weight(247 g/mol)
Atomic Volume(18.28 cm3/mol)
Discover(1944)


States
State(Solid)
Melting Point(1613 K)
Boiling Point(3383 K)
Triple Point(Nil)
Critical Point(Nil)
Heat of Fusion(15 kJ/mol)
Heat of Vaporization(Nil)


Energies
First Ionization Energy(581 kJ/mole)
Second Ionization Energy(Nil)
Third Ionization Energy(Nil)
Electronegativity(1.3)
Electron Affinity(Nil)
Specific Heat(Nil)
Heat Atomization(Nil)


Oxidation and Electrons
Shells(2,8,18,32,25,9,2)
Electron Configuration([Rn] 5f7 6d1 7s2)
Minimum Oxidation Number(0)
Maximum Oxidation Number(4)
Minimum Common Oxidation Number(0)
Maximum Common Oxidation Number(3)


Appearance and Characteristics
Crystal Structure(hexagonal close-packed)
Characteristics(Radioactive)
Color(silvery-white)
Uses(thermoelec. pwr, n source)
Hardness(Nil)
Toxicity(None)


Reactions
Reaction with Air(None)
Reaction with 6M HCl(None)
Reaction with 15M HNO3(None)
Reaction with 6M NaOH(None)


Other Forms
Number of Isotopes(0)
Hydride(CmH2)
Oxide(CmO Cm2O3 CmO2)
Chloride(CmCl3)


Radius
Atomic Radius(174 pm)
Ionic Radius (1+ ion)(Nil)
Ionic Radius (1- ion)(Nil)
Ionic Radius (2+ ion)(Nil)
Ionic Radius (2- ion)(Nil)
Ionic Radius (3+ ion)(111 pm)


Conductivity
Thermal Conductivity(Nil)
Electrical Conductivity(Nil)
Polarizability(23 A3)


Abundance
Source(Synthetic)
Relation Abundance Solar System(Nil)
Abundance Earths Crust(Nil)


f95
Am
Americium
f96
Cm
Curium
f97
Bk
Berkelium

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