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Roentgenium
Roentgenium

Polonium
Polonium



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Roentgenium
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Polonium

Physical Properties of Roentgenium and Polonium

1 Physical
1.1 Melting Point
NA254.00 °C
Physical Properties of Francium
27 3410
1.2 Boiling Point
NA962.00 °C
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
Unknown Luster
NA
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
Not Available
α-polonium
1.7.2 β Allotropes
Not Available
β-polonium
1.7.3 γ Allotropes
Not Available
Not Available