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Polonium
Polonium
☒

Silver
Silver
☒



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Polonium
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Silver

Physical Properties of Polonium and Silver

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Physical

Melting Point

Boiling Point

Physical State

Color

Luster

Mohs Hardness

Brinell Hardness

Vickers Hardness

Speed of Sound

Refractive Index

Reflectivity

Allotropes

α Allotropes

β Allotropes

γ Allotropes

 
254.00 °C
962.00 °C
Solid
Silver
-
2.50
70.00 MPa
30.00 MPa
2,260.00 m/s
2.70
50.00 %
✔✘
α-polonium
β-polonium
-
 
961.93 °C
2,212.00 °C
Solid
Silvery White
Metallic
2.50
251.00 MPa
229.00 MPa
2,680.00 m/s
0.16
97.00 %
✔✘
-
-
-