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Protactinium
Protactinium

Lead
Lead



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Protactinium
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Lead

Atomic Structure of Protactinium and Lead

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Atomic

Atomic Number

9182
3 117
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Electron Configuration

[Rn] 5f2 6d1 7s2
[Xe] 4f14 5d10 6s2 6p2

Crystal Structure

Tetragonal (TETR)
Face Centered Cubic (FCC)

Crystal Lattice

Atom

Number of Protons

9182
3 117
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Number of Neutrons

122125
4 285
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Number of Electrons

9182
3 117
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Radius of an Atom

Atomic Radius

163.00 pm175.00 pm
0 348
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Covalent Radius

200.00 pm146.00 pm
0 260
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Van der Waals Radius

243.00 pm202.00 pm
0 348
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Atomic Weight

231.04 amu207.20 amu
6.94 294
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Atomic Volume

15.00 cm3/mol18.17 cm3/mol
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

92.00 (-eV)24.20 (-eV)
0 392.42
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Lattice Constant

392.50 pm495.08 pm
0 891.25
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Lattice Angles

π/2, π/2, π/2
π/2, π/2, π/2

Lattice C/A Ratio

1.581.51
0.423 1.9
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