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Protactinium
Protactinium




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Atomic Structure of Protactinium

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Atomic

Atomic Number

91
Rank: 27 (Overall)
3 117
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Electron Configuration

[Rn] 5f2 6d1 7s2

Crystal Structure

Tetragonal (TETR)

Crystal Lattice

Atom

Number of Protons

91
Rank: 27 (Overall)
3 117
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Number of Neutrons

122
Rank: 22 (Overall)
4 285
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Number of Electrons

91
Rank: 27 (Overall)
3 117
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Radius of an Atom

Atomic Radius

163.00 pm
Rank: 27 (Overall)
0 348
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Covalent Radius

200.00 pm
Rank: 11 (Overall)
0 260
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Van der Waals Radius

243.00 pm
Rank: 15 (Overall)
0 348
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Atomic Weight

231.04 amu
Rank: 24 (Overall)
6.94 294
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Atomic Volume

15.00 cm3/mol
Rank: 50 (Overall)
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

92.00 (-eV)
Rank: 11 (Overall)
0 392.42
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Lattice Constant

392.50 pm
Rank: 26 (Overall)
0 891.25
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Lattice Angles

π/2, π/2, π/2

Lattice C/A Ratio

1.58
Rank: 36 (Overall)
0.423 1.9
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