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Atomic Structure of Actinium and Thulium

Actinium
Thulium
Atomic Structure of Thulium and Actinium


Atomic Properties
Atomic Number
89   
29
69   
99+
Electron Configuration
[Rn] 6d1 7s2   
[Xe] 4f13 6s2   
Crystal Structure
Face Centered Cubic (FCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
FCC-Crystal-Structure-of-Actinium.jpg#100   
HCP-Crystal-Structure-of-Thulium.jpg#100   
Atom
  
  
Number of Protons
89   
29
69   
99+
Number of Neutrons
138   
16
100   
32
Number of Electrons
89   
29
69   
99+
Radius of an Atom
  
  
Atomic Radius
195.00 pm   
7
176.00 pm   
18
Covalent Radius
Not Available   
160.00 pm   
30
Atomic Weight
227.00 amu   
25
168.93 amu   
99+
Atomic Volume
22.54 cm3/mol   
11
18.10 cm3/mol   
28
Adjacent Atomic Numbers
  
  
Previous Element
Radium
  
Erbium
  
Next Element
Thorium
  
Ytterbium
  
Valence Electron Potential
38.60 (-eV)   
99+
49.70 (-eV)   
28
Lattice Constant
567.00 pm   
8
353.75 pm   
40
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.57   
17
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