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Atomic Structure of Thorium and Radium


Atomic Structure of Radium and Thorium


Atomic Properties

Atomic Number
90   
28
88   
30

Electron Configuration
[Rn] 6d2 7s2   
[Rn] 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   

Crystal Lattice
FCC-Crystal-Structure-of-Thorium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
90   
28
88   
30

Number of Neutrons
142   
15
138   
16

Number of Electrons
90   
28
88   
30

Radius of an Atom
  
  

Atomic Radius
179.80 pm   
15
Not Available   

Covalent Radius
206.00 pm   
7
221.00 pm   
3

Van der Waals Radius
237.00 pm   
15
283.00 pm   
4

Atomic Weight
232.04 amu   
23
226.00 amu   
26

Atomic Volume
19.90 cm3/mol   
20
45.20 cm3/mol   
4

Adjacent Atomic Numbers
  
  

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Actinium
  
Francium
  

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Actinium
  

Valence Electron Potential
59.30 (-eV)   
23
20.10 (-eV)   
99+

Lattice Constant
508.42 pm   
14
514.80 pm   
13

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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