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Actinium
Actinium




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Atomic Structure of Actinium

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Atomic

Atomic Number

89
Rank: 29 (Overall)
3 117
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Electron Configuration

[Rn] 6d1 7s2

Crystal Structure

Face Centered Cubic (FCC)

Crystal Lattice

Atom

Number of Protons

89
Rank: 29 (Overall)
3 117
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Number of Neutrons

138
Rank: 17 (Overall)
4 285
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Number of Electrons

89
Rank: 29 (Overall)
3 117
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Radius of an Atom

Atomic Radius

195.00 pm
Rank: 9 (Overall)
0 348
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Covalent Radius

186.00 pm
Rank: 21 (Overall)
0 260
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Van der Waals Radius

215.00 pm
Rank: 31 (Overall)
0 348
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Atomic Weight

227.00 amu
Rank: 25 (Overall)
6.94 294
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Atomic Volume

22.54 cm3/mol
Rank: 20 (Overall)
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

38.60 (-eV)
Rank: 50 (Overall)
0 392.42
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Lattice Constant

567.00 pm
Rank: 9 (Overall)
0 891.25
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Lattice Angles

π/2, π/2, π/2

Lattice C/A Ratio

1.89
Rank: 2 (Overall)
0.423 1.9
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