Statements (108)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:chemical_compound
|
| gptkbp:bfsLayer |
6
|
| gptkbp:bfsParent |
gptkb:Periodic_Table_of_Elements
gptkb:Agent_Berkelium |
| gptkbp:appearance |
silvery metallic
|
| gptkbp:application |
gptkb:hospital
nuclear reactors neutron sources radiography used in scientific studies used in studies of actinides |
| gptkbp:availability |
limited
synthetic |
| gptkbp:category |
actinide
|
| gptkbp:color |
gptkb:item
silvery silvery metallic |
| gptkbp:commissioned |
gptkb:1949
by bombarding americium with neutrons |
| gptkbp:composed_of |
neutron bombardment
similar to other actinides ion bombardment |
| gptkbp:contains_allergens |
none known
|
| gptkbp:cooling_system |
poor
12 W/(m· K) 0.12 J/(g· K) |
| gptkbp:diplomatic_relations |
fissile material
used in neutron sources used in nuclear research |
| gptkbp:discovered_by |
gptkb:University
gptkb:Glenn_T._Seaborg neutron bombardment Glenn T. Seaborg, Albert Ghiorso, and Emilio Segrè |
| gptkbp:dissolved |
low
soluble in acids |
| gptkbp:ecological_role |
none known
|
| gptkbp:electronegativity |
1.3 (Pauling scale)
[ Rn] 5f^97s^2 |
| gptkbp:environmental_impact |
radioactive waste
minimal due to rarity |
| gptkbp:field |
paramagnetic
|
| gptkbp:financial_performance |
unstable isotopes
|
| gptkbp:first_introduced |
1950s
|
| gptkbp:historical_period |
gptkb:television_series
|
| https://www.w3.org/2000/01/rdf-schema#label |
Berkelium
|
| gptkbp:ingredients |
not applicable
|
| gptkbp:isotopes |
gptkb:Californium-251
gptkb:theorem gptkb:battle gptkb:Curium-243 97 high Bk-247 several known |
| gptkbp:lifespan |
1380 days (Bk-247)
1380 years 1380 years (Bk-247) |
| gptkbp:market |
limited
|
| gptkbp:material |
can form with other actinides
used in some nuclear applications |
| gptkbp:melting_point |
2627 ° C
986 ° C |
| gptkbp:members |
f-block
|
| gptkbp:named_after |
gptkb:Berkeley,_California
|
| gptkbp:notable_products |
berkelium chloride
|
| gptkbp:occurs_in |
synthetic
|
| gptkbp:origin |
gptkb:Berkeley,_California
gptkb:Berkley,_California |
| gptkbp:population |
14.78 g/cm³
|
| gptkbp:power_output |
6.3 e V
6.2 e V |
| gptkbp:price |
high
very expensive |
| gptkbp:produced_by |
produced in nuclear reactors
neutron bombardment of americium |
| gptkbp:products |
berkelium oxide
|
| gptkbp:replaced_by |
1950
|
| gptkbp:requires |
lead shielding recommended
|
| gptkbp:research_focus |
important for nuclear chemistry
|
| gptkbp:safety_features |
handle with care
radioactive toxicity handled with care radioactive material radioactive handling required lead shielding recommended |
| gptkbp:set_in |
gptkb:californium
gptkb:Californium gptkb:americium gptkb:neptunium uranium plutonium thorium |
| gptkbp:social_structure |
face-centered cubic
+3, +4 |
| gptkbp:storage |
cool, dry place
in inert atmosphere |
| gptkbp:symbol |
Bk
|
| gptkbp:type_of |
7440-40-6
|
| gptkbp:uses |
gptkb:Research_Institute
|
| gptkbp:was_a_response_to |
reacts with halogens
reacts with acids forms salts forms oxides reacts with oxygen oxidizes in air |
| gptkbp:water_management |
radioactive waste management
regulated as hazardous waste |
| gptkbp:year_created |
gptkb:1949
|