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Atomic Structure of Thulium and Europium

Thulium
Europium
Atomic Structure of Europium and Thulium


Atomic Properties
Atomic Number
69   
99+
63   
99+
Electron Configuration
[Xe] 4f13 6s2   
[Xe] 4f7 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Thulium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
69   
99+
63   
99+
Number of Neutrons
100   
32
89   
38
Number of Electrons
69   
99+
63   
99+
Radius of an Atom
  
  
Atomic Radius
176.00 pm   
18
180.00 pm   
14
Covalent Radius
160.00 pm   
30
198.00 pm   
13
Van der Waals Radius
Not Available   
233.00 pm   
18
Atomic Weight
168.93 amu   
99+
151.96 amu   
99+
Atomic Volume
18.10 cm3/mol   
28
28.90 cm3/mol   
8
Adjacent Atomic Numbers
  
  
Previous Element
Erbium
  
Samarium
  
Next Element
Ytterbium
  
Gadolinium
  
Valence Electron Potential
49.70 (-eV)   
28
45.60 (-eV)   
35
Lattice Constant
353.75 pm   
40
458.10 pm   
17
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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