|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:allotropes
|
gptkb:alpha-germanium
gptkb:beta-germanium
|
|
gptkbp:appearance
|
grayish-white
|
|
gptkbp:atomicNumber
|
32
|
|
gptkbp:atomicWeight
|
72.630
|
|
gptkbp:bandGap
|
0.67 eV
|
|
gptkbp:block
|
p-block
|
|
gptkbp:boilingPoint
|
2833°C
|
|
gptkbp:CASNumber
|
7440-56-4
|
|
gptkbp:category
|
metalloid
|
|
gptkbp:crystalSystem
|
diamond cubic
|
|
gptkbp:density
|
5.323 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Clemens_Winkler
|
|
gptkbp:discoveredIn
|
1886
|
|
gptkbp:electricalResistivity
|
1.45 Ω·m (at 20°C)
|
|
gptkbp:electronConfiguration
|
[Ar] 3d10 4s2 4p2
|
|
gptkbp:electronegativity
|
2.01
|
|
gptkbp:firstIonizationEnergy
|
762.0 kJ/mol
|
|
gptkbp:foundIn
|
copper ores
arsenide minerals
zinc ores
|
|
gptkbp:hardnessMohs
|
6
|
|
gptkbp:isotopes
|
gptkb:Ge-70
gptkb:Ge-72
gptkb:Ge-73
gptkb:Ge-74
gptkb:Ge-76
|
|
gptkbp:IUPACName
|
germanium
|
|
gptkbp:locatedOnPeriodicTable
|
between silicon and tin
|
|
gptkbp:magneticOrdering
|
diamagnetic
|
|
gptkbp:meltingPoint
|
938.3°C
|
|
gptkbp:namedAfter
|
gptkb:Germany
|
|
gptkbp:naturalAbundance
|
1.6 ppm in Earth's crust
|
|
gptkbp:oxidationStates
|
+2
+4
|
|
gptkbp:period
|
4
|
|
gptkbp:radioactive
|
no
|
|
gptkbp:relatedGroup
|
14
|
|
gptkbp:reusable
|
yes
|
|
gptkbp:stateAtRoomTemperature
|
gptkb:stone
|
|
gptkbp:symbol
|
gptkb:Ge
|
|
gptkbp:thermalConductivity
|
60.2 W/(m·K)
|
|
gptkbp:toxicity
|
low
|
|
gptkbp:uses
|
fiber optics
semiconductors
transistors
infrared optics
|
|
gptkbp:bfsParent
|
gptkb:OpenDaylight
|
|
gptkbp:bfsLayer
|
5
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Germanium
|