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Lutetium

☒

Thorium

☒

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Lutetium

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Thorium

Physical Properties of Lutetium and Thorium

Lutetium Metal

Lutetium

Thorium Metal

Thorium

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1 Physical

1.1 Melting Point

1,652.00 °C1,750.00 °C

27 3410

1.2 Boiling Point

3,402.00 °C4,790.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silvery White

Silver

1.3.3 Luster

Metallic

NA

1.4 Hardness

1.4.1 Mohs Hardness

NA3.00

0.2 8.5

1.4.2 Brinell Hardness

893.00 MPa390.00 MPa

0.14 3490

1.4.3 Vickers Hardness

1,160.00 MPa295.00 MPa

121 3430

1.5 Speed of Sound

NA2,490.00 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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