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Lanthanum
Lanthanum




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Atomic Structure of Lanthanum

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Atomic

Atomic Number

57
Rank: 59 (Overall)
3 117
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Electron Configuration

[Xe] 5d2 6s2

Crystal Structure

Double Hexagonal Close Packed (DHCP)

Crystal Lattice

Atom

Number of Protons

57
Rank: 58 (Overall)
3 117
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Number of Neutrons

82
Rank: 42 (Overall)
4 285
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Number of Electrons

57
Rank: 58 (Overall)
3 117
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Radius of an Atom

Atomic Radius

187.00 pm
Rank: 10 (Overall)
0 348
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Covalent Radius

207.00 pm
Rank: 6 (Overall)
0 260
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Van der Waals Radius

240.00 pm
Rank: 17 (Overall)
0 348
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Atomic Weight

138.91 amu
Rank: 53 (Overall)
6.94 294
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Atomic Volume

20.73 cm3/mol
Rank: 26 (Overall)
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

40.71 (-eV)
Rank: 47 (Overall)
0 392.42
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Lattice Constant

377.20 pm
Rank: 31 (Overall)
0 891.25
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Lattice Angles

π/2, π/2, 2 π/3

Lattice C/A Ratio

1.62
Rank: 16 (Overall)
0.423 1.9
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