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Tungsten

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Actinium

☒

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Tungsten

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Actinium

Physical Properties of Tungsten and Actinium

Tungsten Metal

Tungsten

Actinium Metal

Actinium

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1 Physical

1.1 Melting Point

3,410.00 °C1,227.00 °C

27 3410

1.2 Boiling Point

5,660.00 °C3,200.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Grayish White

Silvery White

1.3.3 Luster

Lustrous

NA

1.4 Hardness

1.4.1 Mohs Hardness

7.50NA

0.2 8.5

1.4.2 Brinell Hardness

2,000.00 MPaNA

0.14 3490

1.4.3 Vickers Hardness

3,430.00 MPaNA

121 3430

1.5 Speed of Sound

4,620.00 m/sNA

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

62.00 %NA

58 97

1.7 Allotropes

✔ ✘

✔ ✘

1.7.1 α Allotropes

Not Available

Not Available

1.7.2 β Allotropes

Not Available

Not Available

1.7.3 γ Allotropes

Not Available

Not Available

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