|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:abundanceInEarthsCrust
|
~25 ppm
|
|
gptkbp:appearance
|
hard, lustrous, silver-gray metal
|
|
gptkbp:atomicNumber
|
27
|
|
gptkbp:atomicWeight
|
58.933
|
|
gptkbp:block
|
d-block
|
|
gptkbp:boilingPoint
|
2927°C
|
|
gptkbp:CASNumber
|
7440-48-4
|
|
gptkbp:category
|
transition metal
|
|
gptkbp:commonCompounds
|
gptkb:cobalt(II)_chloride
cobalt(II) sulfate
cobalt(II,III) oxide
|
|
gptkbp:crystalSystem
|
hexagonal close-packed
|
|
gptkbp:density
|
8.90 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Georg_Brandt
|
|
gptkbp:discoveredIn
|
1735
|
|
gptkbp:electricalResistivity
|
62.4 nΩ·m (20°C)
|
|
gptkbp:electronConfiguration
|
[Ar] 3d7 4s2
|
|
gptkbp:electronegativity
|
1.88 (Pauling scale)
|
|
gptkbp:firstIsolatedFrom
|
gptkb:Georg_Brandt
|
|
gptkbp:foundIn
|
Earth's crust
|
|
gptkbp:hardnessMohs
|
5.0
|
|
gptkbp:hasBiologicalActivity
|
essential trace element
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Cobalt (element)
|
|
gptkbp:isotopes
|
gptkb:Co-59
gptkb:Co-60
|
|
gptkbp:IUPACName
|
cobalt
|
|
gptkbp:magneticOrdering
|
ferromagnetic
|
|
gptkbp:majorCity
|
gptkb:Australia
gptkb:Democratic_Republic_of_the_Congo
gptkb:Russia
|
|
gptkbp:meltingPoint
|
1495°C
|
|
gptkbp:nameOrigin
|
from German 'Kobold', meaning 'goblin'
|
|
gptkbp:oxidationStateMostStable
|
+2
|
|
gptkbp:oxidationStates
|
+2
+3
|
|
gptkbp:period
|
4
|
|
gptkbp:phaseAtSTP
|
gptkb:stone
|
|
gptkbp:radioactive
|
gptkb:Co-60
no (except isotopes)
|
|
gptkbp:relatedGroup
|
9
|
|
gptkbp:roleInBiology
|
component of vitamin B12
|
|
gptkbp:standardState
|
gptkb:stone
|
|
gptkbp:symbol
|
Co
|
|
gptkbp:thermalConductivity
|
100 W/(m·K)
|
|
gptkbp:toxicity
|
toxic in large amounts
|
|
gptkbp:uses
|
batteries
catalysts
pigments
vitamin B12
alloys
magnets
|
|
gptkbp:bfsParent
|
gptkb:Kobold
|
|
gptkbp:bfsLayer
|
7
|