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Atomic Structure of Actinium and Lutetium

Actinium
Lutetium
Atomic Structure of Lutetium and Actinium


Atomic Properties
Atomic Number
89   
29
71   
99+
Electron Configuration
[Rn] 6d1 7s2   
[Xe] 6s2 4f14 5d1   
Crystal Structure
Face Centered Cubic (FCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
FCC-Crystal-Structure-of-Actinium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
89   
29
71   
99+
Number of Neutrons
138   
16
104   
30
Number of Electrons
89   
29
71   
99+
Radius of an Atom
  
  
Atomic Radius
195.00 pm   
7
174.00 pm   
20
Covalent Radius
Not Available   
187.00 pm   
20
Van der Waals Radius
Not Available   
221.00 pm   
22
Atomic Weight
227.00 amu   
25
174.97 amu   
40
Atomic Volume
22.54 cm3/mol   
11
17.78 cm3/mol   
30
Adjacent Atomic Numbers
  
  
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Radium
  
Ytterbium
  
Next Element
Thorium
  
Hafnium
  
Valence Electron Potential
38.60 (-eV)   
99+
50.90 (-eV)   
26
Lattice Constant
567.00 pm   
8
350.31 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.59   
10
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