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Promethium

☒

Iridium

☒

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Promethium

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Iridium

Physical Properties of Promethium and Iridium

Promethium Electron Configuration

Promethium

Iridium Metal

Iridium

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1 Physical

1.1 Melting Point

1,042.00 °C2,410.00 °C

27 3410

1.2 Boiling Point

3,000.00 °C4,527.00 °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

NA6.50

0.2 8.5

1.4.2 Brinell Hardness

NA1,670.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NA1,760.00 MPa

121 3430

1.5 Speed of Sound

NA4,825.00 m/s

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

NA78.00 %

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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