|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
silvery-white
|
|
gptkbp:atomicNumber
|
77
|
|
gptkbp:atomicWeight
|
192.217
|
|
gptkbp:block
|
d-block
|
|
gptkbp:boilingPoint
|
4428°C
|
|
gptkbp:CASNumber
|
7439-88-5
|
|
gptkbp:category
|
platinum group metal
|
|
gptkbp:chemicalSeries
|
transition metal
|
|
gptkbp:corrosionResistance
|
very high
|
|
gptkbp:crystalSystem
|
face-centered cubic
|
|
gptkbp:density
|
22.56 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Smithson_Tennant
|
|
gptkbp:discoveredIn
|
1803
|
|
gptkbp:electronConfiguration
|
[Xe] 4f14 5d7 6s2
|
|
gptkbp:electronegativity
|
2.20 (Pauling scale)
|
|
gptkbp:hardness
|
very hard
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Ir
|
|
gptkbp:isotopes
|
gptkb:Ir-191
gptkb:Ir-193
|
|
gptkbp:meltingPoint
|
2466°C
|
|
gptkbp:mostStableIsotope
|
gptkb:Ir-193
|
|
gptkbp:namedAfter
|
gptkb:Iris_(Greek_goddess)
|
|
gptkbp:oxidationStates
|
+1
+2
+3
+6
+4
|
|
gptkbp:period
|
6
|
|
gptkbp:positionInPeriodicTable
|
period 6, group 9
|
|
gptkbp:relatedGroup
|
9
|
|
gptkbp:standardState
|
gptkb:stone
|
|
gptkbp:symbol
|
iridium
|
|
gptkbp:uses
|
spark plugs
electrical contacts
crucibles
pen tips
|
|
gptkbp:bfsParent
|
gptkb:Iridium
|
|
gptkbp:bfsLayer
|
6
|