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Gallium
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Thulium
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Gallium
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Thulium
Atomic Structure of Gallium and Thulium
Gallium
Thulium
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Summary
Periodic Table
Facts
Uses
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Chemical
Atomic
Mechanical
Magnetic
Thermal
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Atomic
Atomic Number
31
69
3
117
👆🏻
Electron Configuration
[Ar] 3d
10
4s
2
4p
1
[Xe] 4f
13
6s
2
Crystal Structure
Orthorhombic (ORTH)
Hexagonal Close Packed (HCP)
Crystal Lattice
Atom
Number of Protons
31
69
3
117
👆🏻
Number of Neutrons
39
100
4
285
👆🏻
Number of Electrons
31
69
3
117
👆🏻
Radius of an Atom
Atomic Radius
135.00 pm
176.00 pm
0
348
👆🏻
Covalent Radius
122.00 pm
160.00 pm
0
260
👆🏻
Van der Waals Radius
187.00 pm
227.00 pm
0
348
👆🏻
Atomic Weight
69.72 amu
168.93 amu
6.94
294
👆🏻
Atomic Volume
11.80 cm3/mol
18.10 cm3/mol
1.39
71.07
👆🏻
Adjacent Atomic Numbers
Previous Element
Next Element
Valence Electron Potential
69.70 (-eV)
49.70 (-eV)
0
392.42
👆🏻
Lattice Constant
451.97 pm
353.75 pm
0
891.25
👆🏻
Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
Lattice C/A Ratio
1.30
1.57
0.423
1.9
👆🏻
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