|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
silvery white
|
|
gptkbp:atomicNumber
|
95
|
|
gptkbp:atomicRadius
|
173 pm
|
|
gptkbp:atomicWeight
|
[243]
|
|
gptkbp:block
|
f-block
|
|
gptkbp:boilingPoint
|
2607 K
|
|
gptkbp:CASNumber
|
7440-35-9
|
|
gptkbp:category
|
synthetic element
radioactive element
transuranic element
|
|
gptkbp:crystalSystem
|
double hexagonal close-packed
|
|
gptkbp:density
|
12 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Glenn_T._Seaborg
gptkb:Leon_O._Morgan
gptkb:Ralph_A._James
|
|
gptkbp:discoveredIn
|
1944
|
|
gptkbp:electronConfiguration
|
[Rn] 5f7 7s2
|
|
gptkbp:electronegativity
|
1.3 (Pauling scale)
|
|
gptkbp:firstIsolatedAt
|
gptkb:University_of_Chicago
|
|
gptkbp:foundIn
|
not found in nature
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Americium
|
|
gptkbp:isotopes
|
gptkb:Americium-241
gptkb:Americium-242
gptkb:Americium-243
gptkb:Americium-244
gptkb:Americium-245
gptkb:Americium-246
gptkb:Americium-247
|
|
gptkbp:IUPACName
|
gptkb:Americium
|
|
gptkbp:magneticOrdering
|
paramagnetic
|
|
gptkbp:meltingPoint
|
1176 K
|
|
gptkbp:molarHeatCapacity
|
62.7 J/(mol·K)
|
|
gptkbp:mostCommonIsotopeHalfLife
|
432.2 years
|
|
gptkbp:mostStableIsotope
|
gptkb:Americium-241
gptkb:Americium-243
7,370 years
|
|
gptkbp:namedAfter
|
gptkb:Americas
|
|
gptkbp:namedFor
|
gptkb:Glenn_T._Seaborg
|
|
gptkbp:oxidationStates
|
+2
+3
+5
+6
+4
|
|
gptkbp:period
|
7
|
|
gptkbp:positionInPeriodicTable
|
between plutonium and curium
|
|
gptkbp:producedBy
|
neutron bombardment of plutonium
|
|
gptkbp:radioactive
|
true
|
|
gptkbp:relatedGroup
|
actinide
|
|
gptkbp:riskFactor
|
highly radioactive and toxic
|
|
gptkbp:stateAtRoomTemperature
|
gptkb:stone
|
|
gptkbp:symbol
|
Am
|
|
gptkbp:thermalConductivity
|
10 W/(m·K)
|
|
gptkbp:uses
|
neutron sources
smoke detectors
industrial gauges
|
|
gptkbp:bfsParent
|
gptkb:The_Transuranium_Elements
|
|
gptkbp:bfsLayer
|
5
|