×

Lead
Lead

Thallium
Thallium



ADD
Compare
X
Lead
X
Thallium

Physical Properties of Lead and Thallium

Add ⊕
1 Physical
1.1 Melting Point
327.50 °C303.50 °C
27 3410
1.2 Boiling Point
1,740.00 °C1,457.00 °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
1.501.20
0.2 8.5
1.4.2 Brinell Hardness
38.00 MPa26.50 MPa
0.14 3490
1.4.3 Vickers Hardness
NANA
121 3430
1.5 Speed of Sound
1,190.00 m/s818.00 m/s
818 16200
1.6 Optical Properties
1.6.1 Refractive Index
NANA
1.000933 1.7229
1.6.2 Reflectivity
NANA
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