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Atomic Structure of Praseodymium and Thallium

Praseodymium
Thallium
Atomic Structure of Thallium and Praseodymium


Atomic Properties
Atomic Number
59   
99+
81   
35
Electron Configuration
[Xe] 4f3 6s2   
[Xe] 4f14 5d10 6s2 6p1   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
59   
99+
81   
35
Number of Neutrons
82   
99+
123   
20
Number of Electrons
59   
99+
81   
35
Radius of an Atom
  
  
Atomic Radius
182.00 pm   
11
170.00 pm   
22
Covalent Radius
203.00 pm   
9
145.00 pm   
39
Van der Waals Radius
239.00 pm   
14
196.00 pm   
30
Atomic Weight
140.91 amu   
99+
204.38 amu   
31
Atomic Volume
20.80 cm3/mol   
15
17.20 cm3/mol   
31
Adjacent Atomic Numbers
  
  
Previous Element
Cerium
  
Mercury
  
Next Element
Neodymium
  
Lead
  
Valence Electron Potential
42.64 (-eV)   
99+
9.60 (-eV)   
99+
Lattice Constant
367.25 pm   
29
345.66 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.61   
4
1.60   
6
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