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Atomic Structure of Cobalt and Lanthanum

Cobalt
Lanthanum
Atomic Structure of Lanthanum and Cobalt


Atomic Properties
Atomic Number
22   
99+
57   
99+
Electron Configuration
[Ar] 3d2 4s2   
[Xe] 5d2 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Cobalt.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
Atom
  
  
Number of Protons
22   
99+
57   
99+
Number of Neutrons
26   
99+
82   
99+
Number of Electrons
22   
99+
57   
99+
Radius of an Atom
  
  
Atomic Radius
147.00 pm   
34
187.00 pm   
8
Covalent Radius
160.00 pm   
30
207.00 pm   
6
Van der Waals Radius
200.00 pm   
28
240.00 pm   
13
Atomic Weight
47.87 amu   
99+
138.91 amu   
99+
Atomic Volume
10.64 cm3/mol   
99+
20.73 cm3/mol   
16
Adjacent Atomic Numbers
  
  
Previous Element
Iron
  
Barium
  
Next Element
Nickel
  
Cerium
  
Valence Electron Potential
95.20 (-eV)   
10
40.71 (-eV)   
99+
Lattice Constant
295.08 pm   
99+
377.20 pm   
28
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.62   
2
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