|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:abundanceInEarthCrust
|
27.7% (second most abundant element)
|
|
gptkbp:appearance
|
gray with a bluish tinge
|
|
gptkbp:atomicNumber
|
14
|
|
gptkbp:bandGap
|
1.12 eV (at 300 K)
|
|
gptkbp:block
|
p-block
|
|
gptkbp:boilingPoint
|
3265°C
|
|
gptkbp:CASNumber
|
7440-21-3
|
|
gptkbp:category
|
metalloid
|
|
gptkbp:crystalSystem
|
diamond cubic
|
|
gptkbp:density
|
2.329 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Jöns_Jacob_Berzelius
|
|
gptkbp:discoveredIn
|
1824
|
|
gptkbp:electronConfiguration
|
[Ne] 3s2 3p2
|
|
gptkbp:electronegativity
|
1.90
|
|
gptkbp:firstIsolatedFrom
|
1823
|
|
gptkbp:firstIsolationBy
|
gptkb:Jöns_Jacob_Berzelius
|
|
gptkbp:hardnessMohs
|
6.5
|
|
gptkbp:hasBiologicalActivity
|
trace element in some organisms
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Element 14
|
|
gptkbp:isotopes
|
gptkb:28Si
gptkb:29Si
gptkb:30Si
|
|
gptkbp:IUPACName
|
Silicon
|
|
gptkbp:magneticOrdering
|
diamagnetic
|
|
gptkbp:massNumber
|
28.085 u
|
|
gptkbp:meltingPoint
|
1414°C
|
|
gptkbp:name
|
Silicon
|
|
gptkbp:namedAfter
|
Latin 'silex' meaning flint
|
|
gptkbp:naturalOccurrence
|
primordial
|
|
gptkbp:oxidationStates
|
+2
-4
+4
|
|
gptkbp:period
|
3
|
|
gptkbp:phaseAtSTP
|
gptkb:stone
|
|
gptkbp:radioactive
|
no
|
|
gptkbp:relatedGroup
|
14
|
|
gptkbp:source
|
feldspar
quartz
clays
sand (silicon dioxide)
|
|
gptkbp:standardState
|
gptkb:stone
|
|
gptkbp:symbol
|
gptkb:Si
|
|
gptkbp:thermalConductivity
|
149 W/(m·K)
|
|
gptkbp:thermalExpansion
|
2.6 µm/(m·K)
|
|
gptkbp:toxicity
|
low
|
|
gptkbp:uses
|
semiconductors
glass production
solar cells
alloys
|
|
gptkbp:bfsParent
|
gptkb:Acorn_Computers
|
|
gptkbp:bfsLayer
|
5
|