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Atomic Structure of Radium and Lanthanum

Radium
Lanthanum
Atomic Structure of Lanthanum and Radium


Atomic Properties
Atomic Number
88   
30
57   
99+
Electron Configuration
[Rn] 7s2   
[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
88   
30
57   
99+
Number of Neutrons
138   
16
82   
99+
Number of Electrons
88   
30
57   
99+
Radius of an Atom
  
  
Atomic Radius
Not Available   
187.00 pm   
8
Covalent Radius
221.00 pm   
3
207.00 pm   
6
Van der Waals Radius
283.00 pm   
4
240.00 pm   
13
Atomic Weight
226.00 amu   
26
138.91 amu   
99+
Atomic Volume
45.20 cm3/mol   
4
20.73 cm3/mol   
16
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Barium
  
Next Element
Actinium
  
Cerium
  
Valence Electron Potential
20.10 (-eV)   
99+
40.71 (-eV)   
99+
Lattice Constant
514.80 pm   
13
377.20 pm   
28
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.62   
2
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