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Atomic Structure of Praseodymium and 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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