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Hafnium

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Erbium

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Hafnium

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Erbium

Physical Properties of Hafnium and Erbium

Hafnium Metal

Hafnium

Erbium Metal

Erbium

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1 Physical

1.1 Melting Point

2,150.00 °C1,522.00 °C

27 3410

1.2 Boiling Point

5,400.00 °C2,510.00 °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

Lustrous

1.4 Hardness

1.4.1 Mohs Hardness

5.50NA

0.2 8.5

1.4.2 Brinell Hardness

1,450.00 MPa814.00 MPa

0.14 3490

1.4.3 Vickers Hardness

1,520.00 MPa589.00 MPa

121 3430

1.5 Speed of Sound

3,010.00 m/s2,830.00 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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