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Atomic Structure of Hafnium and Thorium

Hafnium
Thorium
Atomic Structure of Thorium and Hafnium


Atomic Properties
Atomic Number
72   
99+
90   
28
Electron Configuration
[Xe] 4f14 5d2 6s2   
[Rn] 6d2 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Thorium.jpg#100   
Atom
  
  
Number of Protons
72   
99+
90   
28
Number of Neutrons
106   
29
142   
15
Number of Electrons
72   
99+
90   
28
Radius of an Atom
  
  
Atomic Radius
159.00 pm   
28
179.80 pm   
15
Covalent Radius
175.00 pm   
23
206.00 pm   
7
Van der Waals Radius
200.00 pm   
28
237.00 pm   
15
Atomic Weight
178.49 amu   
39
232.04 amu   
23
Atomic Volume
13.60 cm3/mol   
38
19.90 cm3/mol   
20
Adjacent Atomic Numbers
  
  
Previous Element
Lutetium
  
Actinium
  
Next Element
Tantalum
  
Protactinium
  
Valence Electron Potential
81.00 (-eV)   
16
59.30 (-eV)   
23
Lattice Constant
319.64 pm   
99+
508.42 pm   
14
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.58   
12
Not Available   
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