|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:abundanceInEarthsCrust
|
5th most abundant element
|
|
gptkbp:appearance
|
dull gray, silver
|
|
gptkbp:atomicNumber
|
20
|
|
gptkbp:atomicWeight
|
40.078
|
|
gptkbp:block
|
s-block
|
|
gptkbp:boilingPoint
|
1757 K
|
|
gptkbp:CASNumber
|
7440-70-2
|
|
gptkbp:category
|
alkaline earth metal
|
|
gptkbp:color
|
silvery-white
|
|
gptkbp:compounds
|
gptkb:calcium_acetate
gptkb:calcium_chloride
gptkb:calcium_hydroxide
gptkb:calcium_lactate
gptkb:calcium_nitrate
gptkb:calcium_phosphate
gptkb:calcium_sulfate
gptkb:calcium_gluconate
calcium carbonate
calcium oxide
|
|
gptkbp:crystalSystem
|
face-centered cubic
|
|
gptkbp:density
|
1.55 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Humphry_Davy
|
|
gptkbp:discoveredIn
|
1808
|
|
gptkbp:electronConfiguration
|
[Ar] 4s2
|
|
gptkbp:electronegativity
|
1.00 (Pauling scale)
|
|
gptkbp:flammability
|
reacts with water
|
|
gptkbp:foundIn
|
Earth's crust
|
|
gptkbp:hasBiologicalActivity
|
muscle contraction
bone formation
blood clotting
nerve function
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Calcium
|
|
gptkbp:isotopes
|
Ca-40
Ca-42
Ca-43
Ca-44
Ca-46
Ca-48
|
|
gptkbp:IUPACName
|
calcium
|
|
gptkbp:magneticOrdering
|
paramagnetic
|
|
gptkbp:meltingPoint
|
1115 K
|
|
gptkbp:molarHeatCapacity
|
25.929 J/(mol·K)
|
|
gptkbp:namedAfter
|
Latin 'calx' (lime)
|
|
gptkbp:oxidationStates
|
+2
|
|
gptkbp:period
|
4
|
|
gptkbp:pronunciation
|
KAL-see-əm
|
|
gptkbp:radioactive
|
gptkb:Ca-41
gptkb:Ca-45
|
|
gptkbp:relatedGroup
|
2
|
|
gptkbp:requires
|
living organisms
|
|
gptkbp:source
|
dairy products
fortified foods
leafy green vegetables
|
|
gptkbp:standardState
|
gptkb:stone
|
|
gptkbp:storage
|
kept in dry, air-tight containers
|
|
gptkbp:symbol
|
Ca
|
|
gptkbp:thermalConductivity
|
201 W/(m·K)
|
|
gptkbp:toxicity
|
low toxicity in elemental form
|
|
gptkbp:type
|
reacts with acids
reacts with oxygen
|
|
gptkbp:uses
|
metallurgy
cement production
alloy production
deoxidizer
reducing agent
|
|
gptkbp:bfsParent
|
gptkb:seafood
|
|
gptkbp:bfsLayer
|
3
|