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Atomic Structure of Thallium and Praseodymium

Thallium
Praseodymium
Atomic Structure of Praseodymium and Thallium


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