Statements (39)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:chemical_compound
|
| gptkbp:appearance |
silvery-white
|
| gptkbp:atomicNumber |
68
|
| gptkbp:atomicWeight |
167.259
|
| gptkbp:block |
f-block
|
| gptkbp:boilingPoint |
2868°C
|
| gptkbp:CASNumber |
7440-52-0
|
| gptkbp:category |
rare earth element
|
| gptkbp:crystalSystem |
hexagonal close-packed
|
| gptkbp:density |
9.066 g/cm³
|
| gptkbp:discoveredBy |
gptkb:Carl_Gustaf_Mosander
|
| gptkbp:discoveredIn |
1843
|
| gptkbp:electronConfiguration |
[Xe] 4f12 6s2
|
| gptkbp:electronegativity |
1.24
|
| gptkbp:foundIn |
gptkb:Sweden
gptkb:gadolinite monazite xenotime |
| https://www.w3.org/2000/01/rdf-schema#label |
Erbium
|
| gptkbp:isotopes |
Er-162
Er-164 Er-166 Er-167 Er-168 Er-170 |
| gptkbp:magneticOrdering |
paramagnetic
|
| gptkbp:meltingPoint |
1529°C
|
| gptkbp:namedAfter |
gptkb:Ytterby
|
| gptkbp:naturalOccurrence |
gptkb:stone
|
| gptkbp:oxidationStates |
+3
|
| gptkbp:period |
6
|
| gptkbp:relatedGroup |
lanthanide
|
| gptkbp:symbol |
gptkb:Er
|
| gptkbp:uses |
nuclear technology
lasers optical fiber amplifiers |
| gptkbp:bfsParent |
gptkb:Er
gptkb:Lanthanide |
| gptkbp:bfsLayer |
6
|