Cobalt

Chromium

Atomic Structure of Cobalt and Chromium

Cobalt

Chromium

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Atomic

Atomic Number

2224

3 117

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Electron Configuration

[Ar] 3d² 4s²

[Ar] 3d⁵ 4s¹

Crystal Structure

Hexagonal Close Packed (HCP)

Body Centered Cubic (BCC)

Crystal Lattice

Atom

Number of Protons

2224

3 117

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Number of Neutrons

2628

4 285

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Number of Electrons

2224

3 117

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Radius of an Atom

Atomic Radius

147.00 pm128.00 pm

0 348

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Covalent Radius

160.00 pm139.00 pm

0 260

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Van der Waals Radius

200.00 pm200.00 pm

0 348

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Atomic Weight

47.87 amu52.00 amu

6.94 294

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Atomic Volume

10.64 cm3/mol7.23 cm3/mol

1.39 71.07

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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

95.20 (-eV)170.00 (-eV)

0 392.42

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Lattice Constant

295.08 pm291.00 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

1.261.86

0.423 1.9

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