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Samarium
Samarium

Gadolinium
Gadolinium



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Samarium
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Gadolinium

Atomic Structure of Samarium and Gadolinium

Atomic

Atomic Number

6264
3 117
👆🏻

Electron Configuration

[Xe] 4f6 6s2
[Xe] 4f7 5d1 6s2

Crystal Structure

Rhombohedral (RHO)
Hexagonal Close Packed (HCP)

Crystal Lattice

Atom

Number of Protons

6264
3 117
👆🏻

Number of Neutrons

8893
4 285
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Number of Electrons

6264
3 117
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Radius of an Atom

Atomic Radius

180.00 pm180.00 pm
0 348
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Covalent Radius

198.00 pm196.00 pm
0 260
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Van der Waals Radius

229.00 pm237.00 pm
0 348
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Atomic Weight

150.36 amu47.87 amu
6.94 294
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Atomic Volume

19.95 cm3/mol19.90 cm3/mol
1.39 71.07
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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

44.80 (-eV)46.10 (-eV)
0 392.42
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Lattice Constant

362.10 pm363.60 pm
0 891.25
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Lattice Angles

π/2, π/2, 2 π/3
π/2, π/2, 2 π/3

Lattice C/A Ratio

1.621.59
0.423 1.9
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