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Atomic Structure of Technetium and Samarium

Technetium
Samarium
Atomic Structure of Samarium and Technetium


Atomic Properties
Atomic Number
43   
99+
62   
99+
Electron Configuration
[Kr] 4d5 5s2   
[Xe] 4f6 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Rhombohedral (RHO)   
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100   
RHO-Crystal-Structure-of-Samarium.jpg#100   
Atom
  
  
Number of Protons
43   
99+
62   
99+
Number of Neutrons
55   
99+
88   
39
Number of Electrons
43   
99+
62   
99+
Radius of an Atom
  
  
Atomic Radius
136.00 pm   
99+
180.00 pm   
14
Covalent Radius
147.00 pm   
37
198.00 pm   
13
Van der Waals Radius
200.00 pm   
28
229.00 pm   
20
Atomic Weight
98.00 amu   
99+
150.36 amu   
99+
Atomic Volume
8.50 cm3/mol   
99+
19.95 cm3/mol   
19
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Promethium
  
Next Element
Ruthenium
  
Europium
  
Valence Electron Potential
180.00 (-eV)   
3
44.80 (-eV)   
37
Lattice Constant
273.50 pm   
99+
362.10 pm   
33
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.60   
5
Not Available   
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