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Atomic Structure of Actinium and Europium

Actinium
Europium
Atomic Structure of Europium and Actinium


Atomic Properties
Atomic Number
89   
29
63   
99+
Electron Configuration
[Rn] 6d1 7s2   
[Xe] 4f7 6s2   
Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   
Crystal Lattice
FCC-Crystal-Structure-of-Actinium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
89   
29
63   
99+
Number of Neutrons
138   
16
89   
38
Number of Electrons
89   
29
63   
99+
Radius of an Atom
  
  
Atomic Radius
195.00 pm   
7
180.00 pm   
14
Covalent Radius
Not Available   
198.00 pm   
13
Van der Waals Radius
Not Available   
233.00 pm   
18
Atomic Weight
227.00 amu   
25
151.96 amu   
99+
Atomic Volume
22.54 cm3/mol   
11
28.90 cm3/mol   
8
Adjacent Atomic Numbers
  
  
Previous Element
Radium
  
Samarium
  
Next Element
Thorium
  
Gadolinium
  
Valence Electron Potential
38.60 (-eV)   
99+
45.60 (-eV)   
35
Lattice Constant
567.00 pm   
8
458.10 pm   
17
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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