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Lanthanum
Lanthanum

Bismuth
Bismuth



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Lanthanum
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Bismuth

Atomic Structure of Lanthanum and Bismuth

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Atomic

Atomic Number

5783
3 117
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Electron Configuration

[Xe] 5d2 6s2
[Xe] 4f14 5d10 6s2 6p3

Crystal Structure

Double Hexagonal Close Packed (DHCP)
Rhombohedral (RHO)

Crystal Lattice

Atom

Number of Protons

5783
3 117
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Number of Neutrons

82126
4 285
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Number of Electrons

5783
3 117
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Radius of an Atom

Atomic Radius

187.00 pm156.00 pm
0 348
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Covalent Radius

207.00 pm148.00 pm
0 260
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Van der Waals Radius

240.00 pm207.00 pm
0 348
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Atomic Weight

138.91 amu208.98 amu
6.94 294
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Atomic Volume

20.73 cm3/mol21.30 cm3/mol
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

40.71 (-eV)41.90 (-eV)
0 392.42
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Lattice Constant

377.20 pm667.40 pm
0 891.25
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Lattice Angles

π/2, π/2, 2 π/3
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Lattice C/A Ratio

1.621.86
0.423 1.9
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