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Beryllium
Beryllium

Promethium
Promethium



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Beryllium
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Promethium

Physical Properties of Beryllium and Promethium

1 Physical
1.1 Melting Point
1,278.00 °C1,042.00 °C
Physical Properties of Francium
27 3410
1.2 Boiling Point
2,970.00 °C3,000.00 °C
Physical Properties of Flerovium
147 5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
White Gray
Unknown
1.3.3 Luster
Metallic
Metallic
1.4 Hardness
1.4.1 Mohs Hardness
5.50NA
Physical Properties of Cesium
0.2 8.5
1.4.2 Brinell Hardness
590.00 MPaNA
Physical Properties of Cesium
0.14 3490
1.4.3 Vickers Hardness
1,670.00 MPaNA
Physical Properties of Palladium
121 3430
1.5 Speed of Sound
12,890.00 m/sNA
Physical Properties of Thallium
818 16200
1.6 Optical Properties
1.6.1 Refractive Index
NANA
Physical Properties of Mercury
1.000933 1.7229
1.6.2 Reflectivity
NANA
Physical Properties of Molybdenum
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