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Lead
Lead
☒

Technetium
Technetium
☒



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Lead
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Technetium

Physical Properties of Lead and Technetium

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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

 
327.50 °C
1,740.00 °C
Solid
Gray
Metallic
1.50
38.00 MPa
38.00 MPa
1,190.00 m/s
2.02
5.00 %
✔✘
-
-
-
 
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 %
✔✘
-
-
-