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Rubidium
Rubidium
☒

Samarium
Samarium
☒



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Rubidium
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Samarium

Physical Properties of Rubidium and Samarium

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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

 
38.89 °C
688.00 °C
Solid
Grayish White
-
0.30
0.22 MPa
0.22 MPa
1,300.00 m/s
1.54
52.00 %
✔✘
-
-
-
 
1,072.00 °C
1,900.00 °C
Solid
Silvery White
Lustrous
5.50
441.00 MPa
412.00 MPa
2,130.00 m/s
1.80
65.00 %
✔✘
-
-
-