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Atomic Structure of Europium and Promethium

Europium
Promethium
Atomic Structure of Promethium and Europium


Atomic Properties
Atomic Number
63   
99+
61   
99+
Electron Configuration
[Xe] 4f7 6s2   
[Xe] 4f5 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
DHCP-Crystal-Structure-of-Promethium.jpg#100   
Atom
  
  
Number of Protons
63   
99+
61   
99+
Number of Neutrons
89   
38
84   
40
Number of Electrons
63   
99+
61   
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
183.00 pm   
10
Covalent Radius
198.00 pm   
13
199.00 pm   
12
Van der Waals Radius
233.00 pm   
18
236.00 pm   
16
Atomic Weight
151.96 amu   
99+
145.00 amu   
99+
Atomic Volume
28.90 cm3/mol   
8
22.39 cm3/mol   
12
Adjacent Atomic Numbers
  
  
Previous Element
Samarium
  
Neodymium
  
Next Element
Gadolinium
  
Samarium
  
Valence Electron Potential
45.60 (-eV)   
35
44.10 (-eV)   
39
Lattice Constant
458.10 pm   
17
Not Available   
Lattice Angles
π/2, π/2, π/2   
Unknown   
Lattice C/A Ratio
Not Available   
Not Available   
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