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Lead

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Iridium

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Lead

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Iridium

Physical Properties of Lead and Iridium

Lead Metal

Lead

Iridium Metal

Iridium

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1 Physical

1.1 Melting Point

327.50 °C2,410.00 °C

27 3410

1.2 Boiling Point

1,740.00 °C4,527.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Gray

Silvery White

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

1.506.50

0.2 8.5

1.4.2 Brinell Hardness

38.00 MPa1,670.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NA1,760.00 MPa

121 3430

1.5 Speed of Sound

1,190.00 m/s4,825.00 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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