Rubidium

Sodium

Physical Properties of Rubidium and Sodium

Rubidium

Sodium

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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

1,300.00 m/s

1.54

52.00 %

✔✘

97.72 °C

883.00 °C

Solid

Silvery White

Metallic

0.50

0.69 MPa

3,200.00 m/s

1.33

53.00 %

✔✘

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