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Gallium

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Protactinium

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Gallium

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Protactinium

Physical Properties of Gallium and Protactinium

Gallium Electron Configuration

Gallium

Protactinium Electron Configuration

Protactinium

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1 Physical

1.1 Melting Point

29.78 °C1,568.00 °C

27 3410

1.2 Boiling Point

2,403.00 °C4,027.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silvery White

Silver

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

1.50NA

0.2 8.5

1.4.2 Brinell Hardness

56.80 MPaNA

0.14 3490

1.4.3 Vickers Hardness

NANA

121 3430

1.5 Speed of Sound

2,740.00 m/sNA

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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