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Atomic Structure of Lutetium and Samarium

Lutetium
Samarium
Atomic Structure of Samarium and Lutetium


Atomic Properties
Atomic Number
71   
99+
62   
99+
Electron Configuration
[Xe] 6s2 4f14 5d1   
[Xe] 4f6 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Rhombohedral (RHO)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
RHO-Crystal-Structure-of-Samarium.jpg#100   
Atom
  
  
Number of Protons
71   
99+
62   
99+
Number of Neutrons
104   
30
88   
39
Number of Electrons
71   
99+
62   
99+
Radius of an Atom
  
  
Atomic Radius
174.00 pm   
20
180.00 pm   
14
Covalent Radius
187.00 pm   
20
198.00 pm   
13
Van der Waals Radius
221.00 pm   
22
229.00 pm   
20
Atomic Weight
174.97 amu   
40
150.36 amu   
99+
Atomic Volume
17.78 cm3/mol   
30
19.95 cm3/mol   
19
Adjacent Atomic Numbers
  
  
Previous Element
Ytterbium
  
Promethium
  
Next Element
Hafnium
  
Europium
  
Valence Electron Potential
50.90 (-eV)   
26
44.80 (-eV)   
37
Lattice Constant
350.31 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
1.59   
10
Not Available   
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