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Atomic Structure of Thorium and 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
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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