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Atomic Structure of Gallium and Lanthanum

Gallium
Lanthanum
Atomic Structure of Lanthanum and Gallium


Atomic Properties
Atomic Number
31   
99+
57   
99+
Electron Configuration
[Ar] 3d10 4s2 4p1   
[Xe] 5d2 6s2   
Crystal Structure
Orthorhombic (ORTH)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
ORTH-Crystal-Structure-of-Gallium.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
Atom
  
  
Number of Protons
31   
99+
57   
99+
Number of Neutrons
39   
99+
82   
99+
Number of Electrons
31   
99+
57   
99+
Radius of an Atom
  
  
Atomic Radius
135.00 pm   
99+
187.00 pm   
8
Covalent Radius
122.00 pm   
99+
207.00 pm   
6
Van der Waals Radius
187.00 pm   
32
240.00 pm   
13
Atomic Weight
69.72 amu   
99+
138.91 amu   
99+
Atomic Volume
11.80 cm3/mol   
99+
20.73 cm3/mol   
16
Adjacent Atomic Numbers
  
  
Previous Element
Zinc
  
Barium
  
Next Element
Rubidium
  
Cerium
  
Valence Electron Potential
69.70 (-eV)   
19
40.71 (-eV)   
99+
Lattice Constant
451.97 pm   
18
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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