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Atomic Structure of Zirconium and Hafnium

Zirconium
Hafnium
Atomic Structure of Hafnium and Zirconium


Atomic Properties
Atomic Number
40   
99+
72   
99+
Electron Configuration
[Kr] 4d2 5s2   
[Xe] 4f14 5d2 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Zirconium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
40   
99+
72   
99+
Number of Neutrons
51   
99+
106   
29
Number of Electrons
40   
99+
72   
99+
Radius of an Atom
  
  
Atomic Radius
160.00 pm   
27
159.00 pm   
28
Covalent Radius
175.00 pm   
23
175.00 pm   
23
Van der Waals Radius
200.00 pm   
28
200.00 pm   
28
Atomic Weight
91.22 amu   
99+
178.49 amu   
39
Atomic Volume
14.10 cm3/mol   
36
13.60 cm3/mol   
38
Adjacent Atomic Numbers
  
  
Previous Element
Yttrium
  
Lutetium
  
Next Element
Niobium
  
Tantalum
  
Valence Electron Potential
80.00 (-eV)   
18
81.00 (-eV)   
16
Lattice Constant
323.20 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
1.59   
8
1.58   
12
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