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Technetium

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Protactinium

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Technetium

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Protactinium

Physical Properties of Technetium and Protactinium

Technetium Metal

Technetium

Protactinium Electron Configuration

Protactinium

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1 Physical

1.1 Melting Point

2,200.00 °C1,568.00 °C

27 3410

1.2 Boiling Point

4,877.00 °C4,027.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Shiny Gray

Silver

1.3.3 Luster

NA

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

NANA

0.2 8.5

1.4.2 Brinell Hardness

NANA

0.14 3490

1.4.3 Vickers Hardness

NANA

121 3430

1.5 Speed of Sound

16,200.00 m/sNA

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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