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Francium
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Physical Properties of Francium
Francium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Physical
Melting Point
27.00 °C
Rank: 81 (Overall)
-38.83
3410
👆🏻
Boiling Point
677.00 °C
Rank: 78 (Overall)
0
5660
👆🏻
Appearance
Physical State
Solid
Color
-
Luster
-
Hardness
Mohs Hardness
0.20
Rank: 27 (Overall)
0.2
8.5
👆🏻
Brinell Hardness
119.00 MPa
Rank: 59 (Overall)
0.14
3490
👆🏻
Vickers Hardness
300.00 MPa
Rank: 46 (Overall)
0
3920
👆🏻
Speed of Sound
2,440.00 m/s
Rank: 54 (Overall)
818
16200
👆🏻
Optical Properties
Refractive Index
1.70
Rank: 27 (Overall)
0.155
3.41
👆🏻
Reflectivity
72.00 %
Rank: 11 (Overall)
5
97
👆🏻
Allotropes
✔
✘
8% - Alkali Metals Metals
α Allotropes
-
β Allotropes
-
γ Allotropes
-
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