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Thorium

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Rubidium

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Thorium

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Rubidium

Physical Properties of Thorium and Rubidium

Thorium Metal

Thorium

Rubidium Metal

Rubidium

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1 Physical

1.1 Melting Point

1,750.00 °C38.89 °C

27 3410

1.2 Boiling Point

4,790.00 °C688.00 °C

147 5660

1.5 Appearance

1.5.1 Physical State

Solid

Solid

1.5.2 Color

Silver

Grayish White

1.5.3 Luster

NA

NA

1.6 Hardness

1.6.1 Mohs Hardness

3.000.30

0.2 8.5

2.4.3 Brinell Hardness

390.00 MPa0.22 MPa

0.14 3490

2.5.2 Vickers Hardness

295.00 MPaNA

121 3430

3.2 Speed of Sound

2,490.00 m/s1,300.00 m/s

818 16200

3.8 Optical Properties

3.8.1 Refractive Index

NANA

1.000933 1.7229

3.11.2 Reflectivity

NANA

58 97

3.15 Allotropes

✔ ✘

✔ ✘

3.15.1 α Allotropes

Not Available

Not Available

3.15.2 β Allotropes

Not Available

Not Available

3.15.3 γ Allotropes

Not Available

Not Available

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