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Atomic Structure of Thorium and Neptunium

Thorium
Neptunium
Atomic Structure of Neptunium and Thorium


Atomic Properties
Atomic Number
90   
28
93   
25
Electron Configuration
[Rn] 6d2 7s2   
[Rn] 5f4 6d1 7s2   
Crystal Structure
Face Centered Cubic (FCC)   
Orthorhombic (ORTH)   
Crystal Lattice
FCC-Crystal-Structure-of-Thorium.jpg#100   
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
Atom
  
  
Number of Protons
90   
28
93   
25
Number of Neutrons
142   
15
144   
14
Number of Electrons
90   
28
93   
25
Radius of an Atom
  
  
Atomic Radius
179.80 pm   
15
155.00 pm   
30
Covalent Radius
206.00 pm   
7
190.00 pm   
18
Van der Waals Radius
237.00 pm   
15
221.00 pm   
22
Atomic Weight
232.04 amu   
23
237.00 amu   
22
Atomic Volume
19.90 cm3/mol   
20
11.62 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Actinium
  
Uranium
  
Next Element
Protactinium
  
Plutonium
  
Valence Electron Potential
59.30 (-eV)   
23
96.00 (-eV)   
9
Lattice Constant
508.42 pm   
14
666.30 pm   
3
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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