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61
  Pm  
145.000000
Promethium


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Name: Promethium
Symbol: Pm
Atomic Number: 61
AtomicWeight: 145.000000
Family: rare earth elements
CAS RN: 7440-12-2
Description: A radioactive rare earth metal, metallic in appearance
State (25 ° C): Solid
Oxidation states: +3
Valence Electrons: 4f56s2

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