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Atomic Structure of Lanthanum and Gold

Lanthanum
Gold
Atomic Structure of Gold and Lanthanum


Atomic Properties
Atomic Number
57   
99+
79   
37
Electron Configuration
[Xe] 5d2 6s2   
[Xe] 4f14 5d10 6s1   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
FCC-Crystal-Structure-of-Gold.jpg#100   
Atom
  
  
Number of Protons
57   
99+
79   
37
Number of Neutrons
82   
99+
118   
23
Number of Electrons
57   
99+
79   
37
Radius of an Atom
  
  
Atomic Radius
187.00 pm   
8
151.00 pm   
32
Covalent Radius
207.00 pm   
6
144.00 pm   
40
Van der Waals Radius
240.00 pm   
13
166.00 pm   
39
Atomic Weight
138.91 amu   
99+
196.97 amu   
33
Atomic Volume
20.73 cm3/mol   
16
10.20 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
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Barium
  
Platinum
  
Next Element
Cerium
  
Mercury
  
Valence Electron Potential
40.71 (-eV)   
99+
43.40 (-eV)   
99+
Lattice Constant
377.20 pm   
28
407.82 pm   
21
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.62   
2
1.61   
4
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