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Atomic Structure of Barium and Technetium

Barium
Technetium
Atomic Structure of Technetium and Barium


Atomic Properties
Atomic Number
56   
99+
43   
99+
Electron Configuration
[Xe] 6s2   
[Kr] 4d5 5s2   
Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   
Atom
  
  
Number of Protons
56   
99+
43   
99+
Number of Neutrons
81   
99+
55   
99+
Number of Electrons
56   
99+
43   
99+
Radius of an Atom
  
  
Atomic Radius
222.00 pm   
4
136.00 pm   
99+
Covalent Radius
215.00 pm   
5
147.00 pm   
37
Van der Waals Radius
268.00 pm   
6
200.00 pm   
28
Atomic Weight
137.33 amu   
99+
98.00 amu   
99+
Atomic Volume
39.24 cm3/mol   
5
8.50 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cesium
  
Molybdenum
  
Next Element
Lanthanum
  
Ruthenium
  
Valence Electron Potential
21.30 (-eV)   
99+
180.00 (-eV)   
3
Lattice Constant
502.80 pm   
15
273.50 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.60   
5
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