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Actinium
Actinium
☒

Platinum
Platinum
☒



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Actinium
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Platinum

Physical Properties of Actinium and Platinum
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1 Physical
1.1 Melting Point
1,227.00 °C1,772.00 °C
Physical Properties of Francium ▶ ⊕
27 3410
1.3 Boiling Point
3,200.00 °C3,827.00 °C
Physical Properties of Flerovium ▶ ⊕
147 5660
1.4 Appearance
1.4.1 Physical State
Solid
Solid
1.4.2 Color
Silvery White
Silvery White
1.4.3 Luster
NA
Metallic
1.5 Hardness
1.5.1 Mohs Hardness
NA3.50
Physical Properties of Cesium ▶ ⊕
0.2 8.5
1.5.3 Brinell Hardness
NA300.00 MPa
Physical Properties of Cesium ▶ ⊕
0.14 3490
1.5.5 Vickers Hardness
NA400.00 MPa
Physical Properties of Palladium ▶ ⊕
121 3430
1.6 Speed of Sound
NA2,800.00 m/s
Physical Properties of Thallium ▶ ⊕
818 16200
1.7 Optical Properties
1.7.1 Refractive Index
NANA
Physical Properties of Mercury ▶ ⊕
1.000933 1.7229
1.8.2 Reflectivity
NA73.00 %
Physical Properties of Molybdenum ▶ ⊕
58 97
1.10 Allotropes
✔ ✘
✔ ✘
1.10.1 α Allotropes
Not Available
Not Available
1.10.2 β Allotropes
Not Available
Not Available
1.10.3 γ Allotropes
Not Available
Not Available

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