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Terbium
Terbium

Praseodymium
Praseodymium



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Terbium
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Praseodymium

Physical Properties of Terbium and Praseodymium

1 Physical
1.1 Melting Point
1,356.00 °C935.00 °C
Francium
27 3410
1.2 Boiling Point
3,123.00 °C3,130.00 °C
Flerovium
147 5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
Silvery White
Grayish White
1.3.3 Luster
Metallic
Metallic
1.4 Hardness
1.4.1 Mohs Hardness
NANA
Cesium
0.2 8.5
1.4.2 Brinell Hardness
677.00 MPa481.00 MPa
Cesium
0.14 3490
1.4.3 Vickers Hardness
863.00 MPa400.00 MPa
Palladium
121 3430
1.5 Speed of Sound
2,620.00 m/s2,280.00 m/s
Thallium
818 16200
1.6 Optical Properties
1.6.1 Refractive Index
NANA
Mercury
1.000933 1.7229
1.6.2 Reflectivity
NANA
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