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Physical Properties of Protactinium and Americium

Protactinium
Americium
Physical Properties of Americium and Protactinium


Physical Properties
Melting Point
1,568.00 °C   
21
994.00 °C   
99+
Boiling Point
4,027.00 °C   
12
2,607.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery White   
Luster
Metallic   
NA   
Hardness
  
  
Speed of Sound
Not Available   
Not Available   
Optical Properties
  
  
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
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