eka-boron

E368729

Eka-boron is the provisional name Mendeleev used for the then-undiscovered element later identified as scandium, predicted by its position beneath boron in his periodic table.

All labels observed (1)

Label Occurrences
eka-boron canonical 1

How this entity was disambiguated

Statements (31)

Predicate Object
instanceOf hypothetical chemical element
provisional element name
alsoKnownAs eka boron
ekaboron
atomicNumberOfCorrespondingElement 21
category Mendeleev periodic table
surface form: Mendeleev eka-elements
coinedBy Dmitri Mendeleev
correspondingElementDiscoveredBy Lars Fredrik Nilson
correspondingElementDiscoveredIn 1879
correspondsToElement scandium
discoveryConfirmedBy discovery of scandium
field chemistry
groupInPeriodicTable group 3
meaningOfName one below boron in the periodic table
modernElementName scandium
namedAccordingTo Dmitri Mendeleev
surface form: Mendeleev eka-notation
notIdenticalTo boron
scandium
periodInPeriodicTable period 4
positionInPeriodicTable beneath boron
predictedBy Dmitri Mendeleev
predictedIn 1869
predictedUsing periodic law
periodic table
relatedConcept prediction of elements from periodic trends
replacedBy name scandium
significance supported validity of Mendeleev’s periodic law
status superseded name
symbolOfCorrespondingElement Sc
usedIn historical development of the periodic table
wasUndiscoveredAtTimeOfPrediction true

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.