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Iridium
Iridium

Cesium
Cesium



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Iridium
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Cesium

Atomic Structure of Iridium and Cesium

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Atomic

Atomic Number

7755
3 117
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Electron Configuration

[Xe] 4f14 5d7 6s2
[Xe] 6s1

Crystal Structure

Face Centered Cubic (FCC)
Body Centered Cubic (BCC)

Crystal Lattice

Atom

Number of Protons

7455
3 117
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Number of Neutrons

11078
4 285
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Number of Electrons

7455
3 117
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Radius of an Atom

Atomic Radius

136.00 pm265.00 pm
0 348
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Covalent Radius

141.00 pm244.00 pm
0 260
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Van der Waals Radius

202.00 pm343.00 pm
0 348
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Atomic Weight

192.22 amu132.91 amu
6.94 294
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Atomic Volume

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

Previous Element

Next Element

Valence Electron Potential

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

383.90 pm614.10 pm
0 891.25
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Lattice Angles

π/2, π/2, π/2
π/2, π/2, π/2

Lattice C/A Ratio

1.581.87
0.423 1.9
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