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Fermium
Fermium

Cesium
Cesium



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Fermium
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Cesium

Atomic Structure of Fermium and Cesium

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Atomic

Atomic Number

10055
3 117
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Electron Configuration

[Rn] 5f12 7s2
[Xe] 6s1

Crystal Structure

Not Known
Body Centered Cubic (BCC)

Crystal Lattice

Atom

Number of Protons

10055
3 117
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Number of Neutrons

15778
4 285
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Number of Electrons

10055
3 117
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Radius of an Atom

Atomic Radius

180.00 pm265.00 pm
0 348
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Covalent Radius

180.00 pm244.00 pm
0 260
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Van der Waals Radius

245.00 pm343.00 pm
0 348
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Atomic Weight

257.00 amu132.91 amu
6.94 294
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Atomic Volume

18.00 cm3/mol71.07 cm3/mol
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

0.00 (-eV)8.62 (-eV)
0 392.42
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Lattice Constant

350.00 pm614.10 pm
0 891.25
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Lattice Angles

-
π/2, π/2, π/2

Lattice C/A Ratio

1.631.87
0.423 1.9
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