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Atomic Structure of Praseodymium and Thulium

Praseodymium
Thulium
Atomic Structure of Thulium and Praseodymium


Atomic Properties
Atomic Number
59   
99+
69   
99+
Electron Configuration
[Xe] 4f3 6s2   
[Xe] 4f13 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100   
HCP-Crystal-Structure-of-Thulium.jpg#100   
Atom
  
  
Number of Protons
59   
99+
69   
99+
Number of Neutrons
82   
99+
100   
32
Number of Electrons
59   
99+
69   
99+
Radius of an Atom
  
  
Atomic Radius
182.00 pm   
11
176.00 pm   
18
Covalent Radius
203.00 pm   
9
160.00 pm   
30
Van der Waals Radius
239.00 pm   
14
Not Available   
Atomic Weight
140.91 amu   
99+
168.93 amu   
99+
Atomic Volume
20.80 cm3/mol   
15
18.10 cm3/mol   
28
Adjacent Atomic Numbers
  
  
Previous Element
Cerium
  
Erbium
  
Next Element
Neodymium
  
Ytterbium
  
Valence Electron Potential
42.64 (-eV)   
99+
49.70 (-eV)   
28
Lattice Constant
367.25 pm   
29
353.75 pm   
40
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.61   
4
1.57   
17
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