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Protactinium
Protactinium
☒

Iron
Iron
☒



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Protactinium
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Iron

Physical Properties of Protactinium and Iron

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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 %
✔✘
-
-
-
 
1,535.00 °C
2,750.00 °C
Solid
Gray
Metallic
4.00
200.00 MPa
608.00 MPa
5,120.00 m/s
2.60
65.00 %
✔✘
Ferrite (alpha Iron)
beta Iron
gamma Iron