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Polonium

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Zirconium

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Polonium

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Zirconium

Physical Properties of Polonium and Zirconium

Polonium Metal

Polonium

Zirconium Metal

Zirconium

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1 Physical

1.1 Melting Point

254.00 °C1,852.00 °C

27 3410

1.2 Boiling Point

962.00 °C4,377.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silver

Silvery White

1.3.3 Luster

NA

Lustrous

1.4 Hardness

1.4.1 Mohs Hardness

NA5.00

0.2 8.5

1.4.2 Brinell Hardness

NA638.00 MPa

0.14 3490

1.4.3 Vickers Hardness

NA820.00 MPa

121 3430

1.5 Speed of Sound

NA3,800.00 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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