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Atomic Structure of Hafnium and Technetium

Hafnium
Technetium
Atomic Structure of Technetium and Hafnium


Atomic Properties
Atomic Number
72   
99+
43   
99+
Electron Configuration
[Xe] 4f14 5d2 6s2   
[Kr] 4d5 5s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   
Atom
  
  
Number of Protons
72   
99+
43   
99+
Number of Neutrons
106   
29
55   
99+
Number of Electrons
72   
99+
43   
99+
Radius of an Atom
  
  
Atomic Radius
159.00 pm   
28
136.00 pm   
99+
Covalent Radius
175.00 pm   
23
147.00 pm   
37
Van der Waals Radius
200.00 pm   
28
200.00 pm   
28
Atomic Weight
178.49 amu   
39
98.00 amu   
99+
Atomic Volume
13.60 cm3/mol   
38
8.50 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Lutetium
  
Molybdenum
  
Next Element
Tantalum
  
Ruthenium
  
Valence Electron Potential
81.00 (-eV)   
16
180.00 (-eV)   
3
Lattice Constant
319.64 pm   
99+
273.50 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.58   
12
1.60   
5
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