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Actinium

☒

Neodymium

☒

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Actinium

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Neodymium

Physical Properties of Actinium and Neodymium

Actinium Metal

Actinium

Neodymium Metal

Neodymium

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1 Physical

1.1 Melting Point

1,227.00 °C1,010.00 °C

27 3410

1.2 Boiling Point

3,200.00 °C3,127.00 °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

NA

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

NANA

0.2 8.5

1.4.2 Brinell Hardness

NA265.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NA345.00 MPa

121 3430

1.5 Speed of Sound

NA2,330.00 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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Actinium Metal

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Neodymium Metal

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