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Atomic Structure of Actinium and Thorium

Actinium
Thorium
Atomic Structure of Thorium and Actinium


Atomic Properties
Atomic Number
89   
29
90   
28
Electron Configuration
[Rn] 6d1 7s2   
[Rn] 6d2 7s2   
Crystal Structure
Face Centered Cubic (FCC)   
Face Centered Cubic (FCC)   
Crystal Lattice
FCC-Crystal-Structure-of-Actinium.jpg#100   
FCC-Crystal-Structure-of-Thorium.jpg#100   
Atom
  
  
Number of Protons
89   
29
90   
28
Number of Neutrons
138   
16
142   
15
Number of Electrons
89   
29
90   
28
Radius of an Atom
  
  
Atomic Radius
195.00 pm   
7
179.80 pm   
15
Covalent Radius
Not Available   
206.00 pm   
7
Van der Waals Radius
Not Available   
237.00 pm   
15
Atomic Weight
227.00 amu   
25
232.04 amu   
23
Atomic Volume
22.54 cm3/mol   
11
19.90 cm3/mol   
20
Adjacent Atomic Numbers
  
  
Previous Element
Radium
  
Actinium
  
Next Element
Thorium
  
Protactinium
  
Valence Electron Potential
38.60 (-eV)   
99+
59.30 (-eV)   
23
Lattice Constant
567.00 pm   
8
508.42 pm   
14
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
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