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Lead
Lead

Niobium
Niobium



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Lead
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Niobium

Physical Properties of Lead and Niobium

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1 Physical
1.1 Melting Point
327.50 °C2,468.00 °C
Physical Properties of Francium
27 3410
1.2 Boiling Point
1,740.00 °C2,468.00 °C
Physical Properties of Flerovium
147 5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
Gray
Gray
1.3.3 Luster
Metallic
Metallic
1.4 Hardness
1.4.1 Mohs Hardness
1.506.00
Physical Properties of Cesium
0.2 8.5
1.4.2 Brinell Hardness
38.00 MPa735.00 MPa
Physical Properties of Cesium
0.14 3490
1.4.3 Vickers Hardness
NA870.00 MPa
Physical Properties of Palladium
121 3430
1.5 Speed of Sound
1,190.00 m/s3,480.00 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