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Technetium

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Praseodymium

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Technetium

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Physical Properties of Technetium and Praseodymium

Technetium Metal

Technetium

Praseodymium Metal

Praseodymium

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1 Physical

1.1 Melting Point

2,200.00 °C935.00 °C

27 3410

1.2 Boiling Point

4,877.00 °C3,130.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Shiny Gray

Grayish White

1.3.3 Luster

NA

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

NANA

0.2 8.5

1.4.2 Brinell Hardness

NA481.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NA400.00 MPa

121 3430

1.5 Speed of Sound

16,200.00 m/s2,280.00 m/s

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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