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Atomic Structure of Francium and Lanthanum

Francium
Lanthanum
Atomic Structure of Lanthanum and Francium


Atomic Properties
Atomic Number
87   
31
57   
99+
Electron Configuration
[Rn] 7s1   
[Xe] 5d2 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
Atom
  
  
Number of Protons
87   
31
57   
99+
Number of Neutrons
136   
17
82   
99+
Number of Electrons
87   
31
57   
99+
Radius of an Atom
  
  
Atomic Radius
Not Available   
187.00 pm   
8
Covalent Radius
260.00 pm   
1
207.00 pm   
6
Van der Waals Radius
348.00 pm   
1
240.00 pm   
13
Atomic Weight
223.00 amu   
27
138.91 amu   
99+
Atomic Volume
Not Available   
20.73 cm3/mol   
16
Adjacent Atomic Numbers
  
  
Previous Element
Polonium
  
Barium
  
Next Element
Radium
  
Cerium
  
Valence Electron Potential
8.00 (-eV)   
99+
40.71 (-eV)   
99+
Lattice Constant
Not Available   
377.20 pm   
28
Lattice Angles
NA   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.62   
2
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