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Americium
Americium
☒

Neptunium
Neptunium
☒



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Americium
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Neptunium

Physical Properties of Americium and Neptunium
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1 Physical
1.1 Melting Point
994.00 °C640.00 °C
Francium ▶ ⊕
27 3410
1.2 Boiling Point
2,607.00 °C3,902.00 °C
Flerovium ▶ ⊕
147 5660
1.3 Appearance
1.3.1 Physical State
Solid
Solid
1.3.2 Color
Silvery White
Silver
1.3.3 Luster
NA
Metallic
1.4 Hardness
1.4.1 Mohs Hardness
NANA
Cesium ▶ ⊕
0.2 8.5
1.4.2 Brinell Hardness
NANA
Cesium ▶ ⊕
0.14 3490
1.4.3 Vickers Hardness
NANA
Palladium ▶ ⊕
121 3430
1.5 Speed of Sound
NANA
Thallium ▶ ⊕
818 16200
1.6 Optical Properties
1.6.1 Refractive Index
NANA
Mercury ▶ ⊕
1.000933 1.7229
1.6.2 Reflectivity
NANA
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

Americium MetalBerkelium Electron Configuration
Americium vs Berkelium
Americium MetalMendelevium Electron Configuration
Americium vs Mendelevium
Americium MetalFermium Electron Configuration
Americium vs Fermium

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