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Europium

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Hafnium

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Europium

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Hafnium

Physical Properties of Europium and Hafnium

Europium Metal

Europium

Hafnium Metal

Hafnium

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1 Physical

1.1 Melting Point

822.00 °C2,150.00 °C

27 3410

1.2 Boiling Point

1,597.00 °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

Lustrous

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

167.00 MPa1,520.00 MPa

121 3430

1.5 Speed of Sound

NA3,010.00 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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