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Protactinium
Protactinium

Thulium
Thulium



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Protactinium
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Thulium

Physical Properties of Protactinium and Thulium

Physical

Melting Point

Boiling Point

Physical State

Color

Luster

Mohs Hardness

Brinell Hardness

Vickers Hardness

Speed of Sound

Refractive Index

Reflectivity

Allotropes

α Allotropes

β Allotropes

γ Allotropes

 
1,568.00 °C
4,027.00 °C
Solid
Silver
Metallic
5.00
125.00 MPa
220.00 MPa
12,400.00 m/s
1.60
60.00 %
-
-
-
 
1,545.00 °C
1,730.00 °C
Solid
Silvery Gray
Metallic
2.25
471.00 MPa
520.00 MPa
2,760.00 m/s
1.60
35.00 %
-
-
-