Electronic data		Thermal data		Steric data
Shells: 2,8,18,32,25,8,2 Orbitals: [Rn] 5f7 7s2 Electronegativity: 1.2, -- 1. Ionization potential: 5.993 eV 2. Ionization potential: -- eV 3. Ionization potential: -- eV Oxidation states: 6,5,4,3 Electrical conductivity: 0.022 10^6		Melting point: 994 °C Boiling point: 2607 °C Specific heat: 0.11 J/gK Heat of fusion: 14.40 kJ/mol Heat of vaporization: -- kJ/mol Thermal conductivity: 0.1 W/cmK		Atomic radius: -- Å Ionic radius: -- Å () Covalent radius: -- Å Atomic volume: 17.86 cm³/mol Density (293 K): 13.6 g/cm³ Crystal structure: Hexagonal

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
240Am	0	240	3/2	2.12d	EC,	View
241Am	0	241.057	5/2	432.7y		View
242Am	0	242	1	16.02h	-,EC	View
242Amm	0	242	5	141y	IT,	View
243Am	0	243.061	5/2	7.37E03y		View
244Am	0	244	6	10.1h	-	View
245Am	0	245	5/2	2.05h	-	View
246Am	0	246	7/2	39m	-	View

Legend

Name origin:	Named for the American continent, by analogy with europium.
Description:	Silvery-white, artificially produced radioactive metal.
Discovered by:	G.T.Seaborg, R.A.James, L.O.Morgan, A.Ghiorso
Year:	1945
Place:	United States
Sources:	Produced by bombarding plutonium with neutrons.
Use(s):	Americium-241 is currently used in smoke detectors.