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Atomic Structure of Thulium and Praseodymium


Atomic Structure of Praseodymium and Thulium


Atomic Properties

Atomic Number
69   
99+
59   
99+

Electron Configuration
[Xe] 4f13 6s2   
[Xe] 4f3 6s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
HCP-Crystal-Structure-of-Thulium.jpg#100   
HCP-Crystal-Structure-of-Praseodymium.jpg#100   

Atom
  
  

Number of Protons
69   
99+
59   
99+

Number of Neutrons
100   
32
82   
99+

Number of Electrons
69   
99+
59   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
182.00 pm   
11

Covalent Radius
160.00 pm   
30
203.00 pm   
9

Van der Waals Radius
Not Available   
239.00 pm   
14

Atomic Weight
168.93 amu   
99+
140.91 amu   
99+

Atomic Volume
18.10 cm3/mol   
28
20.80 cm3/mol   
15

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  
Cerium
  

Next Element
Ytterbium
  
Neodymium
  

Valence Electron Potential
49.70 (-eV)   
28
42.64 (-eV)   
99+

Lattice Constant
353.75 pm   
40
367.25 pm   
29

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
1.57   
17
1.61   
4

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