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Cobalt
Cobalt

Barium
Barium



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Cobalt
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Barium

Atomic Structure of Cobalt and Barium

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Atomic

Atomic Number

2256
3 117
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Electron Configuration

[Ar] 3d2 4s2
[Xe] 6s2

Crystal Structure

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

Crystal Lattice

Atom

Number of Protons

2256
3 117
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Number of Neutrons

2681
4 285
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Number of Electrons

2256
3 117
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Radius of an Atom

Atomic Radius

147.00 pm222.00 pm
0 348
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Covalent Radius

160.00 pm215.00 pm
0 260
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Van der Waals Radius

200.00 pm268.00 pm
0 348
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Atomic Weight

47.87 amu137.33 amu
6.94 294
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Atomic Volume

10.64 cm3/mol39.24 cm3/mol
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

95.20 (-eV)21.30 (-eV)
0 392.42
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Lattice Constant

295.08 pm502.80 pm
0 891.25
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Lattice Angles

π/2, π/2, 2 π/3
π/2, π/2, π/2

Lattice C/A Ratio

1.261.57
0.423 1.9
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