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Atomic Structure of Thorium and Actinium

Thorium
Actinium
Atomic Structure of Actinium and Thorium


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