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Promethium

☒

Ytterbium

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Promethium

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Ytterbium

Physical Properties of Promethium and Ytterbium

Promethium Electron Configuration

Promethium

Ytterbium Metal

Ytterbium

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1 Physical

1.1 Melting Point

1,042.00 °C824.00 °C

27 3410

1.2 Boiling Point

3,000.00 °C1,196.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Unknown

Silvery White

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

NANA

0.2 8.5

1.4.2 Brinell Hardness

NA343.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NA206.00 MPa

121 3430

1.5 Speed of Sound

NA1,590.00 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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