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Polonium

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Beryllium

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Polonium

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Beryllium

Physical Properties of Polonium and Beryllium

Polonium Metal

Polonium

Beryllium Metal

Beryllium

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1 Physical

1.1 Melting Point

254.00 °C1,278.00 °C

27 3410

1.2 Boiling Point

962.00 °C2,970.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silver

White Gray

1.3.3 Luster

NA

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

NA5.50

0.2 8.5

1.4.2 Brinell Hardness

NA590.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NA1,670.00 MPa

121 3430

1.5 Speed of Sound

NA12,890.00 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

α-polonium

Not Available

1.7.2 β Allotropes

β-polonium

Not Available

1.7.3 γ Allotropes

Not Available

Not Available

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