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Chromium
Chromium

Beryllium
Beryllium



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Chromium
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Beryllium

Atomic Structure of Chromium and Beryllium

Atomic

Atomic Number

244
3 117
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Electron Configuration

[Ar] 3d5 4s1
[He] 2s2

Crystal Structure

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

Crystal Lattice

Atom

Number of Protons

244
3 117
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Number of Neutrons

285
4 285
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Number of Electrons

244
3 117
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Radius of an Atom

Atomic Radius

128.00 pm112.00 pm
0 348
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Covalent Radius

139.00 pm96.00 pm
0 260
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Van der Waals Radius

200.00 pm153.00 pm
0 348
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Atomic Weight

52.00 amu9.01 amu
6.94 294
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Atomic Volume

7.23 cm3/mol5.00 cm3/mol
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

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

291.00 pm228.58 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

1.861.57
0.423 1.9
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