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Atomic Structure of Tantalum and Hafnium

Tantalum
Hafnium
Atomic Structure of Hafnium and Tantalum


Atomic Properties
Atomic Number
73   
99+
72   
99+
Electron Configuration
[Xe] 4f14 5d3 6s2   
[Xe] 4f14 5d2 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
73   
99+
72   
99+
Number of Neutrons
108   
28
106   
29
Number of Electrons
73   
99+
72   
99+
Radius of an Atom
  
  
Atomic Radius
146.00 pm   
35
159.00 pm   
28
Covalent Radius
170.00 pm   
25
175.00 pm   
23
Van der Waals Radius
200.00 pm   
28
200.00 pm   
28
Atomic Weight
180.95 amu   
38
178.49 amu   
39
Atomic Volume
10.90 cm3/mol   
99+
13.60 cm3/mol   
38
Adjacent Atomic Numbers
  
  
Previous Element
Hafnium
  
Lutetium
  
Next Element
Tungsten
  
Tantalum
  
Valence Electron Potential
110.00 (-eV)   
7
81.00 (-eV)   
16
Lattice Constant
330.13 pm   
99+
319.64 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.58   
12
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