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Beryllium
Beryllium

Sodium
Sodium



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Beryllium
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Sodium

Atomic Structure of Beryllium and Sodium

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Atomic

Atomic Number

411
3 117
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Electron Configuration

[He] 2s2
[Ne] 3s1

Crystal Structure

Hexagonal Close Packed (HCP)
Body Centered Cubic (BCC)

Crystal Lattice

Atom

Number of Protons

411
3 117
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Number of Neutrons

512
4 285
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Number of Electrons

411
3 117
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Radius of an Atom

Atomic Radius

112.00 pm186.00 pm
0 348
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Covalent Radius

96.00 pm166.00 pm
0 260
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Van der Waals Radius

153.00 pm227.00 pm
0 348
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Atomic Weight

9.01 amu22.99 amu
6.94 294
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Atomic Volume

5.00 cm3/mol23.70 cm3/mol
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

82.00 (-eV)14.10 (-eV)
0 392.42
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Lattice Constant

228.58 pm429.06 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

1.571.01
0.423 1.9
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