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Promethium

☒

Scandium

☒

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Promethium

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Scandium

Physical Properties of Promethium and Scandium

Promethium Electron Configuration

Promethium

Scandium Metal

Scandium

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1 Physical

1.1 Melting Point

1,042.00 °C1,539.00 °C

27 3410

1.2 Boiling Point

3,000.00 °C2,832.00 °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

Lustrous

1.4 Hardness

1.4.1 Mohs Hardness

NANA

0.2 8.5

1.4.2 Brinell Hardness

NA750.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NANA

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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