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Atomic Structure of Radium and Samarium

Radium
Samarium
Atomic Structure of Samarium and Radium


Atomic Properties
Atomic Number
88   
30
62   
99+
Electron Configuration
[Rn] 7s2   
[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
88   
30
62   
99+
Number of Neutrons
138   
16
88   
39
Number of Electrons
88   
30
62   
99+
Radius of an Atom
  
  
Atomic Radius
Not Available   
180.00 pm   
14
Covalent Radius
221.00 pm   
3
198.00 pm   
13
Van der Waals Radius
283.00 pm   
4
229.00 pm   
20
Atomic Weight
226.00 amu   
26
150.36 amu   
99+
Atomic Volume
45.20 cm3/mol   
4
19.95 cm3/mol   
19
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Promethium
  
Next Element
Actinium
  
Europium
  
Valence Electron Potential
20.10 (-eV)   
99+
44.80 (-eV)   
37
Lattice Constant
514.80 pm   
13
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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