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Promethium

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Magnesium

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Promethium

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Magnesium

Physical Properties of Promethium and Magnesium

Promethium Electron Configuration

Promethium

Magnesium Metal

Magnesium

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1 Physical

1.1 Melting Point

1,042.00 °C650.00 °C

27 3410

1.2 Boiling Point

3,000.00 °C1,107.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Unknown

Gray

1.3.3 Luster

Metallic

NA

1.4 Hardness

1.4.1 Mohs Hardness

NA2.50

0.2 8.5

1.4.2 Brinell Hardness

NA260.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NANA

121 3430

1.5 Speed of Sound

NA4,940.00 m/s

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

NA74.00 %

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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