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Terbium
Terbium

Beryllium
Beryllium



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Terbium
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Beryllium

Atomic Structure of Terbium and Beryllium

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Atomic

Atomic Number

654
3 117
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Electron Configuration

[Xe] 4f9 6s2
[He] 2s2

Crystal Structure

Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)

Crystal Lattice

Atom

Number of Protons

654
3 117
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Number of Neutrons

945
4 285
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Number of Electrons

654
3 117
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Radius of an Atom

Atomic Radius

177.00 pm112.00 pm
0 348
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Covalent Radius

194.00 pm96.00 pm
0 260
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Van der Waals Radius

221.00 pm153.00 pm
0 348
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Atomic Weight

158.93 amu9.01 amu
6.94 294
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Atomic Volume

19.20 cm3/mol5.00 cm3/mol
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

46.80 (-eV)82.00 (-eV)
0 392.42
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Lattice Constant

360.10 pm228.58 pm
0 891.25
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Lattice Angles

π/2, π/2, 2 π/3
π/2, π/2, π/2

Lattice C/A Ratio

1.581.57
0.423 1.9
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