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Promethium
Promethium

Praseodymium
Praseodymium



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Promethium
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Praseodymium

Physical Properties of Promethium and Praseodymium

1 Physical
1.1 Melting Point
1,042.00 °C935.00 °C
Physical Properties of Francium
27 3410
1.2 Boiling Point
3,000.00 °C3,130.00 °C
Physical Properties of Flerovium
147 5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
Unknown
Grayish White
1.3.3 Luster
Metallic
Metallic
1.4 Hardness
1.4.1 Mohs Hardness
NANA
Physical Properties of Cesium
0.2 8.5
1.4.2 Brinell Hardness
NA481.00 MPa
Physical Properties of Cesium
0.14 3490
1.4.3 Vickers Hardness
NA400.00 MPa
Physical Properties of Palladium
121 3430
1.5 Speed of Sound
NA2,280.00 m/s
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