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Atomic Structure of Thallium and Hafnium

Thallium
Hafnium
Atomic Structure of Hafnium and Thallium


Atomic Properties
Atomic Number
81   
35
72   
99+
Electron Configuration
[Xe] 4f14 5d10 6s2 6p1   
[Xe] 4f14 5d2 6s2   
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
81   
35
72   
99+
Number of Neutrons
123   
20
106   
29
Number of Electrons
81   
35
72   
99+
Radius of an Atom
  
  
Atomic Radius
170.00 pm   
22
159.00 pm   
28
Covalent Radius
145.00 pm   
39
175.00 pm   
23
Van der Waals Radius
196.00 pm   
30
200.00 pm   
28
Atomic Weight
204.38 amu   
31
178.49 amu   
39
Atomic Volume
17.20 cm3/mol   
31
13.60 cm3/mol   
38
Adjacent Atomic Numbers
  
  
Previous Element
Mercury
  
Lutetium
  
Next Element
Lead
  
Tantalum
  
Valence Electron Potential
9.60 (-eV)   
99+
81.00 (-eV)   
16
Lattice Constant
345.66 pm   
99+
319.64 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.60   
6
1.58   
12
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