Statements (45)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
chemical series
|
| gptkbp:abundance |
not rare in Earth's crust
|
| gptkbp:alsoKnownAs |
lanthanide
|
| gptkbp:atomicNumber |
57-71
|
| gptkbp:characteristic |
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 close-packed
|
| gptkbp:discoveredBy |
various chemists
|
| gptkbp:discoveryPeriod |
19th century
|
| gptkbp:elementGroup |
rare earth elements
|
| gptkbp:firstLine |
lanthanum
|
| https://www.w3.org/2000/01/rdf-schema#label |
lanthanoid
|
| gptkbp:ionicRadiusTrend |
decreases with atomic number (lanthanide contraction)
|
| gptkbp:lastElement |
lutetium
|
| gptkbp:locationOnPeriodicTable |
period 6
|
| gptkbp:magnetType |
paramagnetic
|
| gptkbp:namedAfter |
lanthanum
|
| gptkbp:oxidationStates |
+3
|
| gptkbp:periodicTableGroup |
f-block
|
| gptkbp:property |
high reactivity
form trivalent cations tarnish in air |
| gptkbp:radioactive |
promethium
|
| gptkbp:separationDifficulty |
chemically similar
|
| gptkbp:usedIn |
nuclear reactors
catalysts alloys phosphors magnets |
| gptkbp:bfsParent |
gptkb:Lanthanide
|
| gptkbp:bfsLayer |
6
|