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Physical Properties of Lead and Thallium
Lead
Thallium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
Properties
All
1 Physical
1.1 Melting Point
327.50 °C
303.50 °C
27
3410
1.2 Boiling Point
1,740.00 °C
1,457.00 °C
147
5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
Gray
Silvery White
1.3.3 Luster
Metallic
NA
1.4 Hardness
1.4.1 Mohs Hardness
1.50
1.20
0.2
8.5
1.4.2 Brinell Hardness
38.00 MPa
26.50 MPa
0.14
3490
1.4.3 Vickers Hardness
NA
NA
121
3430
1.5 Speed of Sound
1,190.00 m/s
818.00 m/s
818
16200
1.6 Optical Properties
1.6.1 Refractive Index
NA
NA
1.000933
1.7229
1.6.2 Reflectivity
NA
NA
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
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