Statements (50)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:chemical_compound
|
| gptkbp:bfsLayer |
5
|
| gptkbp:bfsParent |
gptkb:Mendeleev's_Periodic_Table
gptkb:Philae's_APXS |
| gptkbp:application |
gptkb:Mobile_Suit
gptkb:beer gptkb:Photographer gptkb:lighthouse research and development nuclear reactors hydrogen storage catalytic converters glass manufacturing optical instruments photographic films |
| gptkbp:category |
lanthanide
|
| gptkbp:color |
silvery-white
|
| gptkbp:cooling_system |
11.8 W/(m· K)
|
| gptkbp:discovered_by |
gptkb:Carl_Gustaf_Mosander
|
| gptkbp:ecological_role |
no known biological role
|
| gptkbp:electronegativity |
1.1 (Pauling scale)
|
| https://www.w3.org/2000/01/rdf-schema#label |
lanthanum
|
| gptkbp:isotopes |
57
La-138 La-139 |
| gptkbp:melting_point |
3464 ° C
920 ° C |
| gptkbp:notable_conductors |
good conductor
|
| gptkbp:occurs_in |
rare earth minerals
|
| gptkbp:population |
6.162 g/cm³
|
| gptkbp:products |
lanthanum carbonate (La2(C O3)3)
lanthanum chloride (La Cl3) lanthanum fluoride (La F3) lanthanum hydride (La H2) lanthanum oxide (La2 O3) lanthanum sulfate (La2(S O4)3) |
| gptkbp:safety_features |
non-toxic
not classified as hazardous |
| gptkbp:social_structure |
+3
hexagonal close-packed |
| gptkbp:species |
0.0005% by weight
|
| gptkbp:symbol |
La
|
| gptkbp:uses |
catalysts
optical glass phosphors |
| gptkbp:was_a_response_to |
reacts with water
reacts with acids oxidizes in air |
| gptkbp:water_quality |
0.0000001% by weight
|
| gptkbp:year_created |
1839
|