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Atomic Structure of Erbium and Thorium

Erbium
Thorium
Atomic Structure of Thorium and Erbium


Atomic Properties
Atomic Number
68   
99+
90   
28
Electron Configuration
[Xe] 4f12 6s2   
[Rn] 6d2 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Erbium.jpg#100   
FCC-Crystal-Structure-of-Thorium.jpg#100   
Atom
  
  
Number of Protons
68   
99+
90   
28
Number of Neutrons
99   
33
142   
15
Number of Electrons
68   
99+
90   
28
Radius of an Atom
  
  
Atomic Radius
176.00 pm   
18
179.80 pm   
15
Covalent Radius
189.00 pm   
19
206.00 pm   
7
Van der Waals Radius
Not Available   
237.00 pm   
15
Atomic Weight
167.26 amu   
99+
232.04 amu   
23
Atomic Volume
18.40 cm3/mol   
25
19.90 cm3/mol   
20
Adjacent Atomic Numbers
  
  
Previous Element
Holmium
  
Actinium
  
Next Element
Thulium
  
Protactinium
  
Valence Electron Potential
49.00 (-eV)   
29
59.30 (-eV)   
23
Lattice Constant
355.88 pm   
39
508.42 pm   
14
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.57   
17
Not Available   
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