|
gptkbp:instance_of
|
gptkb:isotope
|
|
gptkbp:bfsLayer
|
5
|
|
gptkbp:bfsParent
|
gptkb:lanthanum-137
|
|
gptkbp:application
|
environmental studies
calibration sources
radiological safety monitoring
|
|
gptkbp:color
|
silvery-white
|
|
gptkbp:combatants
|
8.5 Me V
|
|
gptkbp:composed_of
|
reacts with water
soluble in acids
forms oxides
|
|
gptkbp:cooling_system
|
11.5 W/(m· K)
0.19 J/(g· K)
|
|
gptkbp:discovered_by
|
gptkb:Glenn_T._Seaborg
|
|
gptkbp:electronegativity
|
1.12
[ Xe] 6s² 4f¹
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
cerium-137
|
|
gptkbp:is_analyzed_in
|
environmental science
nuclear physics
radiochemistry
|
|
gptkbp:isotopes
|
58
79
unstable
^137 Ce
fission product
|
|
gptkbp:lifespan
|
30.17 years
|
|
gptkbp:melting_point
|
3471 ° C
795 ° C
|
|
gptkbp:mode
|
gptkb:barium-137
gptkb:beta_decay
gptkb:lanthanum-137
|
|
gptkbp:origin
|
produced in nuclear reactors
|
|
gptkbp:parent
|
gptkb:barium-137m
|
|
gptkbp:population
|
6.77 g/cm³
|
|
gptkbp:power_output
|
5.54 e V
|
|
gptkbp:produced_by
|
gptkb:nuclear_fission
neutron capture
|
|
gptkbp:regulatory_compliance
|
regulated by nuclear agencies
|
|
gptkbp:roll_rate
|
5/2
|
|
gptkbp:safety_features
|
radiation exposure
environmental contamination
radioactive waste
|
|
gptkbp:social_structure
|
cubic
|
|
gptkbp:state
|
solid at room temperature
|
|
gptkbp:storage
|
cool, dry places
shielded containers
|
|
gptkbp:symbol
|
Ce
|
|
gptkbp:uses
|
radiation therapy
medical applications
industrial radiography
|
|
gptkbp:year_created
|
1945
|