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Atomic Structure of Promethium and Cerium

Promethium
Cerium
Atomic Structure of Cerium and Promethium


Atomic Properties
Atomic Number
61   
99+
58   
99+
Electron Configuration
[Xe] 4f5 6s2   
[Xe] 4f1 5d1 6s2   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
DHCP-Crystal-Structure-of-Promethium.jpg#100   
DHCP-Crystal-Structure-of-Cerium.jpg#100   
Atom
  
  
Number of Protons
61   
99+
58   
99+
Number of Neutrons
84   
40
82   
99+
Number of Electrons
61   
99+
58   
99+
Radius of an Atom
  
  
Atomic Radius
183.00 pm   
10
181.80 pm   
12
Covalent Radius
199.00 pm   
12
204.00 pm   
8
Van der Waals Radius
236.00 pm   
16
235.00 pm   
17
Atomic Weight
145.00 amu   
99+
140.12 amu   
99+
Atomic Volume
22.39 cm3/mol   
12
20.67 cm3/mol   
17
Adjacent Atomic Numbers
  
  
Previous Element
Neodymium
  
Lanthanum
  
Next Element
Samarium
  
Praseodymium
  
Valence Electron Potential
44.10 (-eV)   
39
41.78 (-eV)   
99+
Lattice Constant
Not Available   
362.00 pm   
34
Lattice Angles
Unknown   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
Not Available   
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