Statements (49)
Predicate | Object |
---|---|
gptkbp:instance_of |
gptkb:chemical_compound
|
gptkbp:abundance_in_seawater |
0.0000001% by weight
|
gptkbp:application |
gptkb:battery
gptkb:ceramics gptkb:medical_imaging gptkb:lighting_system 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:discovery_year |
1839
|
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:oxidation_states |
+3
|
gptkbp:population_density |
6.162 g/cm³
|
gptkbp:related_products |
lanthanum chloride (La Cl3)
lanthanum fluoride (La F3) lanthanum hydride (La H2) lanthanum oxide (La2 O3) lanthanum carbonate (La2(CO3)3) lanthanum sulfate (La2(SO4)3) |
gptkbp:safety |
non-toxic
not classified as hazardous |
gptkbp:species |
0.0005% by weight
|
gptkbp:structure |
hexagonal close-packed
|
gptkbp:symbol |
La
|
gptkbp:uses |
catalysts
optical glass phosphors |
gptkbp:was_a_response_to |
reacts with water
reacts with acids oxidizes in air |
gptkbp:bfsParent |
gptkb:Mendeleev's_Periodic_Table
|
gptkbp:bfsLayer |
5
|