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Technetium
Technetium
☒

Curium
Curium
☒



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Technetium
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Curium

Physical Properties of Technetium and Curium

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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

 
2,200.00 °C
4,877.00 °C
Solid
Shiny Gray
-
2.25
550.00 MPa
500.00 MPa
16,200.00 m/s
1.90
35.00 %
✔✘
-
-
-
 
1,340.00 °C
3,110.00 °C
Solid
Silver
Metallic
2.00
320.00 MPa
461.00 MPa
2,260.00 m/s
1.30
60.00 %
✔✘
-
-
-