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Atomic Structure of Promethium and Thorium

Promethium
Thorium
Atomic Structure of Thorium and Promethium


Atomic Properties
Atomic Number
61   
99+
90   
28
Electron Configuration
[Xe] 4f5 6s2   
[Rn] 6d2 7s2   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
DHCP-Crystal-Structure-of-Promethium.jpg#100   
FCC-Crystal-Structure-of-Thorium.jpg#100   
Atom
  
  
Number of Protons
61   
99+
90   
28
Number of Neutrons
84   
40
142   
15
Number of Electrons
61   
99+
90   
28
Radius of an Atom
  
  
Atomic Radius
183.00 pm   
10
179.80 pm   
15
Covalent Radius
199.00 pm   
12
206.00 pm   
7
Van der Waals Radius
236.00 pm   
16
237.00 pm   
15
Atomic Weight
145.00 amu   
99+
232.04 amu   
23
Atomic Volume
22.39 cm3/mol   
12
19.90 cm3/mol   
20
Adjacent Atomic Numbers
  
  
Previous Element
Neodymium
  
Actinium
  
Next Element
Samarium
  
Protactinium
  
Valence Electron Potential
44.10 (-eV)   
39
59.30 (-eV)   
23
Lattice Constant
Not Available   
508.42 pm   
14
Lattice Angles
Unknown   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
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