|
gptkbp:instance_of
|
gptkb:chemical_compound
|
|
gptkbp:category
|
actinide
|
|
gptkbp:color
|
silvery
silvery metallic
|
|
gptkbp:cooling_system
|
12.5 W/(m· K)
|
|
gptkbp:discovered_by
|
gptkb:Edwin_Mc_Millan
gptkb:University
|
|
gptkbp:dissolved
|
insoluble in water
soluble in acids
|
|
gptkbp:electronegativity
|
1.36 (Pauling scale)
|
|
gptkbp:environmental_impact
|
trace amounts in uranium ores
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
neptunium
|
|
gptkbp:ingredients
|
actinides
Np O2
|
|
gptkbp:isotopes
|
gptkb:Np-237
gptkb:uranium-238
gptkb:theorem
93
30.0 e V
40.0 e V
50.0 e V
Np-234
Np-235
Np-236
|
|
gptkbp:lifespan
|
2.14 million years
|
|
gptkbp:mass
|
237.0482 u
|
|
gptkbp:melting_point
|
4131 ° C
644 ° C
|
|
gptkbp:mode
|
gptkb:plutonium-237
|
|
gptkbp:notable_conductors
|
0.001 S/m
|
|
gptkbp:population
|
20.45 g/cm³
|
|
gptkbp:power_output
|
12.1 e V
20.5 e V
6.265 e V
|
|
gptkbp:previous_name
|
gptkb:neptunium
|
|
gptkbp:regulatory_compliance
|
controlled substance
|
|
gptkbp:safety_features
|
radioactive toxicity
chemical toxicity
|
|
gptkbp:set_in
|
gptkb:americium
gptkb:curium
uranium
plutonium
|
|
gptkbp:social_structure
|
+6
+5
+3
face-centered cubic
+4
|
|
gptkbp:storage
|
shielded containers
|
|
gptkbp:symbol
|
Np
|
|
gptkbp:type_of
|
7439-99-8
|
|
gptkbp:uses
|
gptkb:weapon
gptkb:Research_Institute
nuclear reactors
|
|
gptkbp:was_a_response_to
|
reacts with halogens
reacts with acids
reacts with oxygen
forms nitrides
forms hydrides
|
|
gptkbp:year_created
|
gptkb:1940
|
|
gptkbp:bfsParent
|
gptkb:Fermium
gptkb:Mendeleev's_Periodic_Table
|
|
gptkbp:bfsLayer
|
5
|