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Calcium
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Thorium
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Calcium
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Thorium
Physical Properties of Calcium and Thorium
Calcium
Thorium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Physical
Melting Point
839.00 °C
1,750.00 °C
-38.83
3410
👆🏻
Boiling Point
1,484.00 °C
4,790.00 °C
0
5660
👆🏻
Appearance
Physical State
Solid
Solid
Color
Gray
Silver
Luster
-
-
Hardness
Mohs Hardness
1.75
3.00
0.2
8.5
👆🏻
Brinell Hardness
170.00 MPa
390.00 MPa
0.14
3490
👆🏻
Vickers Hardness
170.00 MPa
295.00 MPa
0
3920
👆🏻
Speed of Sound
3,810.00 m/s
2,490.00 m/s
818
16200
👆🏻
Optical Properties
Refractive Index
1.54
1.60
0.155
3.41
👆🏻
Reflectivity
60.00 %
15.00 %
5
97
👆🏻
Allotropes
✔
✘
✔
✘
α Allotropes
-
-
β Allotropes
-
-
γ Allotropes
-
-
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