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Atomic Structure of Europium and Samarium

Europium
Samarium
Atomic Structure of Samarium and Europium


Atomic Properties
Atomic Number
63   
99+
62   
99+
Electron Configuration
[Xe] 4f7 6s2   
[Xe] 4f6 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Rhombohedral (RHO)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
RHO-Crystal-Structure-of-Samarium.jpg#100   
Atom
  
  
Number of Protons
63   
99+
62   
99+
Number of Neutrons
89   
38
88   
39
Number of Electrons
63   
99+
62   
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
180.00 pm   
14
Covalent Radius
198.00 pm   
13
198.00 pm   
13
Van der Waals Radius
233.00 pm   
18
229.00 pm   
20
Atomic Weight
151.96 amu   
99+
150.36 amu   
99+
Atomic Volume
28.90 cm3/mol   
8
19.95 cm3/mol   
19
Adjacent Atomic Numbers
  
  
Previous Element
Samarium
  
Promethium
  
Next Element
Gadolinium
  
Europium
  
Valence Electron Potential
45.60 (-eV)   
35
44.80 (-eV)   
37
Lattice Constant
458.10 pm   
17
362.10 pm   
33
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
Not Available   
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