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Polonium
Polonium

Roentgenium
Roentgenium



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Polonium
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Roentgenium

Physical Properties of Polonium and Roentgenium

1 Physical
1.1 Melting Point
254.00 °CNA
Physical Properties of Francium
27 3410
1.2 Boiling Point
962.00 °CNA
Physical Properties of Flerovium
147 5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
Silver
Silver
1.3.3 Luster
NA
Unknown Luster
1.4 Hardness
1.4.1 Mohs Hardness
NANA
Physical Properties of Cesium
0.2 8.5
1.4.2 Brinell Hardness
NANA
Physical Properties of Cesium
0.14 3490
1.4.3 Vickers Hardness
NANA
Physical Properties of Palladium
121 3430
1.5 Speed of Sound
NANA
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
α-polonium
Not Available
1.7.2 β Allotropes
β-polonium
Not Available
1.7.3 γ Allotropes
Not Available
Not Available