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Promethium
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Thulium
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Promethium
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Thulium
Atomic Structure of Promethium and Thulium
Promethium
Thulium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
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Atomic
Atomic Number
61
69
3
117
👆🏻
Electron Configuration
[Xe] 4f
5
6s
2
[Xe] 4f
13
6s
2
Crystal Structure
Double Hexagonal Close Packed (DHCP)
Hexagonal Close Packed (HCP)
Crystal Lattice
Atom
Number of Protons
61
69
3
117
👆🏻
Number of Neutrons
84
100
4
285
👆🏻
Number of Electrons
61
69
3
117
👆🏻
Radius of an Atom
Atomic Radius
183.00 pm
176.00 pm
0
348
👆🏻
Covalent Radius
199.00 pm
160.00 pm
0
260
👆🏻
Van der Waals Radius
236.00 pm
227.00 pm
0
348
👆🏻
Atomic Weight
145.00 amu
168.93 amu
6.94
294
👆🏻
Atomic Volume
22.39 cm3/mol
18.10 cm3/mol
1.39
71.07
👆🏻
Adjacent Atomic Numbers
Previous Element
Next Element
Valence Electron Potential
44.10 (-eV)
49.70 (-eV)
0
392.42
👆🏻
Lattice Constant
-
353.75 pm
0
891.25
👆🏻
Lattice Angles
-
π/2, π/2, 2 π/3
Lattice C/A Ratio
1.63
1.57
0.423
1.9
👆🏻
Compare Lanthanide Series
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Promethium vs Holmium
Promethium vs Lutetium
Promethium vs Praseodymium
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Lanthanide Series
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Thulium
Ytterbium
Terbium
Dysprosium
Holmium
Lutetium
» More Lanthanide Series
Lanthanide Series
» More
Praseodymium
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Lanthanum
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Compare Lanthanide Series
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Thulium vs Ytterbium
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Thulium vs Terbium
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Thulium vs Dysprosium
Periodic ...
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Facts
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Uses
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Physical