|
gptkbp:instanceOf
|
group of chemical elements
|
|
gptkbp:atomicRadiusTrend
|
increases down the group
|
|
gptkbp:characteristic
|
silvery-white
shiny
form basic oxides
form divalent cations (2+ charge)
somewhat reactive
|
|
gptkbp:densityTrend
|
increases down the group
|
|
gptkbp:discoveredBy
|
gptkb:Humphry_Davy
|
|
gptkbp:electronegativityTrend
|
decreases down the group
|
|
gptkbp:essentialForLife
|
calcium
magnesium
|
|
gptkbp:form
|
carbonates
oxides
salts
sulfates
hydroxides
ionic compounds
|
|
gptkbp:foundIn
|
Earth's crust
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
alkaline earth metals
|
|
gptkbp:lessReactiveThan
|
alkali metals
|
|
gptkbp:meltingPointTrend
|
generally decreases down the group
|
|
gptkbp:member
|
gptkb:radium
gptkb:strontium
calcium
magnesium
beryllium
barium
|
|
gptkbp:moreReactiveThan
|
gptkb:transition_metals
|
|
gptkbp:oxidationStates
|
+2
|
|
gptkbp:periodicTableGroup
|
s-block
|
|
gptkbp:radioactiveMember
|
gptkb:radium
|
|
gptkbp:reactWith
|
gptkb:halogens
oxygen
water (except beryllium and magnesium)
|
|
gptkbp:relatedGroup
|
gptkb:Group_2_elements
2
|
|
gptkbp:solubilityTrend
|
hydroxides become more soluble down the group
sulfates become less soluble down the group
|
|
gptkbp:symbol
|
gptkb:Ra
gptkb:Mg
gptkb:Be
gptkb:Sr
gptkb:Ba
Ca
|
|
gptkbp:usedIn
|
gptkb:fireworks
gptkb:medicine
construction materials
alloys
|
|
gptkbp:bfsParent
|
gptkb:Periodic_table_of_elements
gptkb:The_Periodic_Table
|
|
gptkbp:bfsLayer
|
5
|