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Iridium
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Tantalum
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Iridium
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Tantalum
Physical Properties of Iridium and Tantalum
Iridium
Tantalum
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Physical
Melting Point
2,410.00 °C
2,996.00 °C
-38.83
3410
👆🏻
Boiling Point
4,527.00 °C
5,425.00 °C
0
5660
👆🏻
Appearance
Physical State
Solid
Solid
Color
Silvery White
Gray Blue
Luster
Metallic
Metallic
Hardness
Mohs Hardness
6.50
6.50
0.2
8.5
👆🏻
Brinell Hardness
1,670.00 MPa
440.00 MPa
0.14
3490
👆🏻
Vickers Hardness
1,760.00 MPa
870.00 MPa
0
3920
👆🏻
Speed of Sound
4,825.00 m/s
3,400.00 m/s
818
16200
👆🏻
Optical Properties
Refractive Index
2.40
2.15
0.155
3.41
👆🏻
Reflectivity
78.00 %
78.00 %
5
97
👆🏻
Allotropes
✔
✘
✔
✘
α Allotropes
-
-
β Allotropes
-
-
γ Allotropes
-
-
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