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Atomic Structure of Technetium and Hafnium

Technetium
Hafnium
Atomic Structure of Hafnium and Technetium


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