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Atomic Structure of Thorium and Calcium

Thorium
Calcium
Atomic Structure of Calcium and Thorium


Atomic Properties
Atomic Number
90   
28
20   
99+
Electron Configuration
[Rn] 6d2 7s2   
[Ar] 4s2   
Crystal Structure
Face Centered Cubic (FCC)   
Face Centered Cubic (FCC)   
Crystal Lattice
FCC-Crystal-Structure-of-Thorium.jpg#100   
FCC-Crystal-Structure-of-Calcium.jpg#100   
Atom
  
  
Number of Protons
90   
28
20   
99+
Number of Neutrons
142   
15
20   
99+
Number of Electrons
90   
28
20   
99+
Radius of an Atom
  
  
Atomic Radius
179.80 pm   
15
197.00 pm   
6
Covalent Radius
206.00 pm   
7
176.00 pm   
22
Van der Waals Radius
237.00 pm   
15
231.00 pm   
19
Atomic Weight
232.04 amu   
23
40.08 amu   
99+
Atomic Volume
19.90 cm3/mol   
20
29.90 cm3/mol   
7
Adjacent Atomic Numbers
  
  
Previous Element
Actinium
  
Potassium
  
Next Element
Protactinium
  
Scandium
  
Valence Electron Potential
59.30 (-eV)   
23
29.00 (-eV)   
99+
Lattice Constant
508.42 pm   
14
558.84 pm   
9
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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