|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:abundanceInEarthCrust
|
4.7%
|
|
gptkbp:allotropes
|
alpha-iron
delta-iron
gamma-iron
|
|
gptkbp:appearance
|
lustrous metallic with a grayish tinge
|
|
gptkbp:atomicNumber
|
26
|
|
gptkbp:block
|
d-block
|
|
gptkbp:boilingPoint
|
2862°C
|
|
gptkbp:CASNumber
|
7439-89-6
|
|
gptkbp:category
|
transition metal
|
|
gptkbp:crystalSystem
|
body-centered cubic
|
|
gptkbp:density
|
7.874 g/cm³
|
|
gptkbp:discoveredBy
|
ancient civilizations
|
|
gptkbp:electricalConductivity
|
10.0 MS/m
|
|
gptkbp:electronConfiguration
|
[Ar] 3d6 4s2
|
|
gptkbp:electronegativity
|
1.83 (Pauling scale)
|
|
gptkbp:formsCompound
|
iron oxide
iron carbonate
iron chloride
iron nitrate
iron sulfide
|
|
gptkbp:foundIn
|
Earth's crust
|
|
gptkbp:hardnessMohs
|
4.0
|
|
gptkbp:hasBiologicalActivity
|
component of hemoglobin
component of myoglobin
|
|
gptkbp:historicalSignificance
|
Iron Age named after it
used in ancient weapons and tools
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Hierro
|
|
gptkbp:isEssentialForLife
|
true
|
|
gptkbp:isFerromagnetic
|
true
|
|
gptkbp:isotopes
|
Fe-54
Fe-56
Fe-57
Fe-58
|
|
gptkbp:magnetType
|
true
|
|
gptkbp:mainOre
|
gptkb:siderite
magnetite
hematite
limonite
|
|
gptkbp:massNumber
|
55.845 u
|
|
gptkbp:meltingPoint
|
1538°C
|
|
gptkbp:nameOrigin
|
Latin ferrum
|
|
gptkbp:oxidationStates
|
+2
+3
|
|
gptkbp:period
|
4
|
|
gptkbp:relatedGroup
|
8
|
|
gptkbp:roleInBiology
|
essential for oxygen transport in blood
|
|
gptkbp:roleInIndustry
|
primary metal for alloy production
|
|
gptkbp:standardState
|
gptkb:stone
|
|
gptkbp:symbol
|
gptkb:Fe
|
|
gptkbp:thermalConductivity
|
80.4 W/(m·K)
|
|
gptkbp:toxicity
|
toxic in excess to humans
|
|
gptkbp:type
|
gptkb:water
oxygen
|
|
gptkbp:uses
|
machinery
steel production
automobiles
construction
manufacturing tools
|
|
gptkbp:bfsParent
|
gptkb:Arrancar
|
|
gptkbp:bfsLayer
|
5
|