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Atomic Structure of Lutetium and Thallium

Lutetium
Thallium
Atomic Structure of Thallium and Lutetium


Atomic Properties
Atomic Number
71   
99+
81   
35
Electron Configuration
[Xe] 6s2 4f14 5d1   
[Xe] 4f14 5d10 6s2 6p1   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
71   
99+
81   
35
Number of Neutrons
104   
30
123   
20
Number of Electrons
71   
99+
81   
35
Radius of an Atom
  
  
Atomic Radius
174.00 pm   
20
170.00 pm   
22
Covalent Radius
187.00 pm   
20
145.00 pm   
39
Van der Waals Radius
221.00 pm   
22
196.00 pm   
30
Atomic Weight
174.97 amu   
40
204.38 amu   
31
Atomic Volume
17.78 cm3/mol   
30
17.20 cm3/mol   
31
Adjacent Atomic Numbers
  
  
Previous Element
Ytterbium
  
Mercury
  
Next Element
Hafnium
  
Lead
  
Valence Electron Potential
50.90 (-eV)   
26
9.60 (-eV)   
99+
Lattice Constant
350.31 pm   
99+
345.66 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.59   
10
1.60   
6
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