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Europium

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Lanthanum

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Europium

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Lanthanum

Physical Properties of Europium and Lanthanum

Europium Metal

Europium

Lanthanum Metal

Lanthanum

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1 Physical

1.1 Melting Point

822.00 °C920.00 °C

27 3410

1.2 Boiling Point

1,597.00 °C3,469.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silvery White

Silvery White

1.3.3 Luster

Lustrous

NA

1.4 Hardness

1.4.1 Mohs Hardness

NA2.50

0.2 8.5

1.4.2 Brinell Hardness

NA350.00 MPa

0.14 3490

1.4.3 Vickers Hardness

167.00 MPa360.00 MPa

121 3430

1.5 Speed of Sound

NA2,475.00 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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