Americium Element Properties

Americium

f94
Pu
Plutonium
f95
Am
Americium
f96
Cm
Curium
General
Name(Americium)
Symbol(Am)
Number(95)
Group Number(NA)
Group(Rare Earth, Actinides)
Block(f)
Density(13.6 g/cm3)
Atomic Weight(243 g/mol)
Atomic Volume(17.86 cm3/mol)
Discover(1944)


States
State(Solid)
Melting Point(1449 K)
Boiling Point(2880 K)
Triple Point(Nil)
Critical Point(Nil)
Heat of Fusion(14.39 kJ/mol)
Heat of Vaporization(62.7 kJ/mol)


Energies
First Ionization Energy(578 kJ/mole)
Second Ionization Energy(Nil)
Third Ionization Energy(Nil)
Electronegativity(1.3)
Electron Affinity(Nil)
Specific Heat(0.11 J/gK)
Heat Atomization(Nil)


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


Appearance and Characteristics
Crystal Structure(hexagonal)
Characteristics(Radioactive)
Color(silvery-white)
Uses(smoke detector)
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(AmH2 AmH3)
Oxide(AmO Am2O3 AmO2)
Chloride(AmCl2 AmCl3)


Radius
Atomic Radius(173 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)(111.5 pm)


Conductivity
Thermal Conductivity(Nil)
Electrical Conductivity(Nil)
Polarizability(23.3 A3)


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


f94
Pu
Plutonium
f95
Am
Americium
f96
Cm
Curium

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