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Atomic Structure of Praseodymium and 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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