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Protactinium
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Lawrencium
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Protactinium
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Lawrencium
Physical Properties of Protactinium and Lawrencium
Protactinium
Lawrencium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
Properties
All
1 Physical
1.1 Melting Point
1,568.00 °C
1,627.00 °C
27
3410
1.2 Boiling Point
4,027.00 °C
NA
147
5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
Silver
Silver
1.3.3 Luster
Metallic
Unknown Luster
1.4 Hardness
1.4.1 Mohs Hardness
NA
NA
0.2
8.5
1.4.2 Brinell Hardness
NA
NA
0.14
3490
1.4.3 Vickers Hardness
NA
NA
121
3430
1.5 Speed of Sound
NA
NA
818
16200
1.6 Optical Properties
1.6.1 Refractive Index
NA
NA
1.000933
1.7229
1.6.2 Reflectivity
NA
NA
58
97
1.7 Allotropes
✔
✘
✔
✘
1.7.1 α Allotropes
Not Available
Not Available
1.7.2 β Allotropes
Not Available
Not Available
1.7.3 γ Allotropes
Not Available
Not Available
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