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Protactinium
Protactinium
☒

Iridium
Iridium
☒



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Protactinium
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Iridium

Physical Properties of Protactinium and Iridium
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1 Physical
1.1 Melting Point
1,568.00 °C2,410.00 °C
Physical Properties of Francium ▶ ⊕
27 3410
1.2 Boiling Point
4,027.00 °C4,527.00 °C
Physical Properties of Flerovium ▶ ⊕
147 5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
Silver
Silvery White
1.3.3 Luster
Metallic
Metallic
1.4 Hardness
1.4.1 Mohs Hardness
NA6.50
Physical Properties of Cesium ▶ ⊕
0.2 8.5
1.4.2 Brinell Hardness
NA1,670.00 MPa
Physical Properties of Cesium ▶ ⊕
0.14 3490
1.4.3 Vickers Hardness
NA1,760.00 MPa
Physical Properties of Palladium ▶ ⊕
121 3430
1.5 Speed of Sound
NA4,825.00 m/s
Physical Properties of Thallium ▶ ⊕
818 16200
1.6 Optical Properties
1.6.1 Refractive Index
NANA
Physical Properties of Mercury ▶ ⊕
1.000933 1.7229
1.6.2 Reflectivity
NA78.00 %
Physical Properties of Molybdenum ▶ ⊕
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

Compare Actinide Series » More

Protactinium Electron ConfigurationThorium Metal
Protactinium vs Thorium
Protactinium Electron ConfigurationCalifornium Electron Configuration
Protactinium vs Californium
Protactinium Electron ConfigurationPlutonium Metal
Protactinium vs Plutonium

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