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Promethium
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Neodymium
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Promethium
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Neodymium
Physical Properties of Promethium and Neodymium
Promethium
Neodymium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Physical
Melting Point
1,042.00 °C
1,010.00 °C
-38.83
3410
👆🏻
Boiling Point
3,000.00 °C
3,127.00 °C
0
5660
👆🏻
Appearance
Physical State
Solid
Solid
Color
-
Silvery White
Luster
Metallic
Metallic
Hardness
Mohs Hardness
-
7.00
0.2
8.5
👆🏻
Brinell Hardness
400.00 MPa
265.00 MPa
0.14
3490
👆🏻
Vickers Hardness
600.00 MPa
345.00 MPa
0
3920
👆🏻
Speed of Sound
2,260.00 m/s
2,330.00 m/s
818
16200
👆🏻
Optical Properties
Refractive Index
1.70
1.64
0.155
3.41
👆🏻
Reflectivity
63.00 %
80.00 %
5
97
👆🏻
Allotropes
✔
✘
✔
✘
α Allotropes
-
-
β Allotropes
-
-
γ Allotropes
-
-
Compare Lanthanide Series
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Promethium vs Holmium
Promethium vs Lutetium
Promethium vs Praseodymium
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Lanthanide Series
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Thulium
Ytterbium
Terbium
Dysprosium
Holmium
Lutetium
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Lanthanide Series
Praseodymium
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Lanthanum
Periodic ...
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Uses
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Compare Lanthanide Series
Neodymium vs Ytterbium
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Neodymium vs Terbium
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Neodymium vs Dysprosium
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