|
gptkbp:instance_of
|
gptkb:chemical_compound
|
|
gptkbp:application
|
nuclear science
|
|
gptkbp:block
|
f-block
|
|
gptkbp:category
|
actinide
|
|
gptkbp:chemical_formula
|
not applicable
|
|
gptkbp:color
|
silvery metallic
|
|
gptkbp:cooling_system
|
poor
|
|
gptkbp:discovered_by
|
gptkb:Glenn_T._Seaborg
|
|
gptkbp:discovery
|
gptkb:University_of_California,_Berkeley
bombardment of americium with neutrons
|
|
gptkbp:discovery_year
|
gptkb:1949
|
|
gptkbp:dissolved
|
low
|
|
gptkbp:electronegativity
|
[ Rn] 5f^97s^2
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
berkelium
|
|
gptkbp:is_found_in
|
nuclear reactors
|
|
gptkbp:is_set_in
|
gptkb:californium
gptkb:americium
gptkb:curium
gptkb:actinium
gptkb:neptunium
gptkb:protactinium
noble gases
alkali metals
halogens
alkaline earth metals
transition metals
nonmetals
radium
uranium
lanthanides
plutonium
metalloids
thorium
chalcogens
pnictogens
|
|
gptkbp:isotopes
|
gptkb:berkelium-247
gptkb:berkelium-248
gptkb:berkelium-249
gptkb:berkelium-250
gptkb:true
97
|
|
gptkbp:lifespan
|
1380 days (Bk-247)
|
|
gptkbp:melting_point
|
2627 ° C
986 ° C
|
|
gptkbp:members
|
f-block
|
|
gptkbp:named_after
|
gptkb:Berkeley,_California
|
|
gptkbp:notable_conductors
|
poor
|
|
gptkbp:oxidation_states
|
+3, +4
|
|
gptkbp:period
|
gptkb:7
|
|
gptkbp:population_density
|
14.78 g/cm³
|
|
gptkbp:predecessor
|
gptkb:californium
|
|
gptkbp:produced_by
|
neutron capture
|
|
gptkbp:safety
|
toxic
|
|
gptkbp:structure
|
face-centered cubic
|
|
gptkbp:successor
|
gptkb:californium
|
|
gptkbp:symbol
|
Bk
|
|
gptkbp:uses
|
research purposes
|
|
gptkbp:was_a_response_to
|
similar to other actinides
|
|
gptkbp:bfsParent
|
gptkb:Mendeleev's_Periodic_Table
|
|
gptkbp:bfsLayer
|
5
|