|
gptkbp:instance_of
|
gptkb:chemical_compound
|
|
gptkbp:bfsLayer
|
6
|
|
gptkbp:bfsParent
|
gptkb:Periodic_Table_of_Elements
|
|
gptkbp:appearance
|
silvery white
|
|
gptkbp:block
|
f-block
|
|
gptkbp:category
|
lanthanide
|
|
gptkbp:color
|
silvery metallic
|
|
gptkbp:cooling_system
|
12.5 W/(m· K)
0.19 J/(g· K)
|
|
gptkbp:discovered_by
|
gptkb:Carl_Auer_von_Welsbach
|
|
gptkbp:dissolved
|
soluble in acids
|
|
gptkbp:ecological_role
|
not essential for life
|
|
gptkbp:electronegativity
|
1.13
[ Xe] 6s² 4f³
|
|
gptkbp:environmental_impact
|
low toxicity
|
|
gptkbp:historical_event
|
named after the Greek word 'prasios' meaning green.
|
|
gptkbp:historical_period
|
gptkb:6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Praseodymium
|
|
gptkbp:isotopes
|
59
Pr-141
Pr-143
|
|
gptkbp:material
|
used in magnesium alloys
|
|
gptkbp:melting_point
|
3518 ° C
931.3 ° C
|
|
gptkbp:members
|
lanthanides
|
|
gptkbp:population
|
6.773 g/cm³
|
|
gptkbp:power_output
|
5.576 e V
|
|
gptkbp:products
|
Praseodymium(III) chloride
Praseodymium(III) nitrate
Praseodymium(III) oxide
Praseodymium(III) sulfate
Praseodymium(IV) oxide
|
|
gptkbp:safety_features
|
handle with care
|
|
gptkbp:set_in
|
gptkb:cerium
gptkb:lanthanum
gptkb:neodymium
gptkb:samarium
|
|
gptkbp:social_structure
|
+3
hexagonal close-packed
|
|
gptkbp:species
|
100% Pr-141
|
|
gptkbp:storage
|
store in a dry place
|
|
gptkbp:symbol
|
Pr
|
|
gptkbp:type_of
|
7440-10-0
|
|
gptkbp:uses
|
gptkb:beer
glass coloring
manufacturing of magnets
|
|
gptkbp:was_a_response_to
|
reacts with water
reacts with halogens
reacts with oxygen
|
|
gptkbp:water_management
|
requires special handling
|
|
gptkbp:year_created
|
1885
|