|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:allotropes
|
none
|
|
gptkbp:appearance
|
silvery metallic
|
|
gptkbp:atomicNumber
|
24
|
|
gptkbp:block
|
d-block
|
|
gptkbp:boilingPoint
|
2944 K
|
|
gptkbp:CASNumber
|
7440-47-3
|
|
gptkbp:category
|
transition metal
|
|
gptkbp:compounds
|
gptkb:chromium(III)_oxide
gptkb:potassium_dichromate
chromium(III) chloride
chromium(III) sulfate
chromium(VI) oxide
|
|
gptkbp:crystalSystem
|
body-centered cubic
|
|
gptkbp:density
|
7.19 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Louis_Nicolas_Vauquelin
|
|
gptkbp:discoveredIn
|
1797
|
|
gptkbp:electronConfiguration
|
[Ar] 3d5 4s1
|
|
gptkbp:electronegativity
|
1.66 (Pauling scale)
|
|
gptkbp:hardness
|
8.5 (Mohs scale)
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Cromo
|
|
gptkbp:isotopes
|
gptkb:Cr-50
gptkb:Cr-52
gptkb:Cr-53
gptkb:Cr-54
|
|
gptkbp:magneticOrdering
|
antiferromagnetic
|
|
gptkbp:majorCity
|
gptkb:India
gptkb:Kazakhstan
gptkb:South_Africa
|
|
gptkbp:massNumber
|
51.9961 u
|
|
gptkbp:meltingPoint
|
1907 K
|
|
gptkbp:molarHeatCapacity
|
23.35 J/(mol·K)
|
|
gptkbp:nameOrigin
|
Greek 'chroma' meaning color
|
|
gptkbp:naturalOccurrence
|
found in chromite ore
|
|
gptkbp:oxidationStates
|
+2
+3
+6
-2 to +6
|
|
gptkbp:period
|
4
|
|
gptkbp:radioactive
|
gptkb:standard
|
|
gptkbp:relatedGroup
|
6
|
|
gptkbp:standardState
|
gptkb:stone
|
|
gptkbp:symbol
|
gptkb:Cr
|
|
gptkbp:thermalConductivity
|
93.9 W/(m·K)
|
|
gptkbp:toxicity
|
hexavalent chromium compounds are toxic
|
|
gptkbp:uses
|
stainless steel production
chrome plating
dyes and pigments
tanning leather
|
|
gptkbp:bfsParent
|
gptkb:Lucía_Puenzo
|
|
gptkbp:bfsLayer
|
7
|