Statements (50)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
chemical series
|
| gptkbp:abundance |
not rare in Earth's crust
|
| gptkbp:alsoKnownAs |
gptkb:lanthanoids
|
| gptkbp:atomicNumber |
57-71
|
| gptkbp:characteristic |
high magnetic susceptibility
similar chemical properties silvery-white metals |
| gptkbp:containsElement |
gptkb:gadolinium
gptkb:terbium gptkb:praseodymium cerium europium lanthanum neodymium samarium dysprosium erbium holmium lutetium thulium ytterbium promethium |
| gptkbp:crystalSystem |
hexagonal, cubic, or orthorhombic
|
| gptkbp:discoveredIn |
19th century
|
| gptkbp:elementCount |
15
|
| gptkbp:endDate |
lutetium
|
| gptkbp:firstIsolatedFrom |
gptkb:Carl_Gustaf_Mosander
|
| gptkbp:groupedWith |
rare earth elements
|
| https://www.w3.org/2000/01/rdf-schema#label |
lanthanide series
|
| gptkbp:locatedIn |
f-block
period 6 |
| gptkbp:meltingPointRange |
798–1663 °C
|
| gptkbp:namedAfter |
lanthanum
|
| gptkbp:oxidationStates |
+3
|
| gptkbp:radioactiveMember |
promethium
|
| gptkbp:range |
6.1–9.8 g/cm³
|
| gptkbp:separationDifficulty |
difficult
|
| gptkbp:textBegins |
lanthanum
|
| gptkbp:usedIn |
electronics
lighting nuclear reactors lasers medical imaging catalysts alloys phosphors magnets glass additives |
| gptkbp:bfsParent |
gptkb:Samarium
|
| gptkbp:bfsLayer |
7
|