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Gadolinium

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Hafnium

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Gadolinium

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Hafnium

Physical Properties of Gadolinium and Hafnium

Gadolinium Metal

Gadolinium

Hafnium Metal

Hafnium

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1 Physical

1.1 Melting Point

1,311.00 °C2,150.00 °C

27 3410

1.2 Boiling Point

3,233.00 °C5,400.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silvery White

Gray

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

NA5.50

0.2 8.5

1.4.2 Brinell Hardness

NA1,450.00 MPa

0.14 3490

1.4.3 Vickers Hardness

510.00 MPa1,520.00 MPa

121 3430

1.5 Speed of Sound

2,680.00 m/s3,010.00 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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