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Protactinium

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Thulium

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Protactinium

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Thulium

Physical Properties of Protactinium and Thulium

Protactinium Electron Configuration

Protactinium

Thulium Metal

Thulium

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1 Physical

1.1 Melting Point

1,568.00 °C1,545.00 °C

27 3410

1.2 Boiling Point

4,027.00 °C1,730.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silver

Silvery Gray

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

NANA

0.2 8.5

1.4.2 Brinell Hardness

NA471.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NA520.00 MPa

121 3430

1.5 Speed of Sound

NANA

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

NANA

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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