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Atomic Structure of Lanthanum and Gallium


Atomic Structure of Gallium and Lanthanum


Atomic Properties

Atomic Number
57   
99+
31   
99+

Electron Configuration
[Xe] 5d2 6s2   
[Ar] 3d10 4s2 4p1   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Orthorhombic (ORTH)   

Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
ORTH-Crystal-Structure-of-Gallium.jpg#100   

Atom
  
  

Number of Protons
57   
99+
31   
99+

Number of Neutrons
82   
99+
39   
99+

Number of Electrons
57   
99+
31   
99+

Radius of an Atom
  
  

Atomic Radius
187.00 pm   
8
135.00 pm   
99+

Covalent Radius
207.00 pm   
6
122.00 pm   
99+

Van der Waals Radius
240.00 pm   
13
187.00 pm   
32

Atomic Weight
138.91 amu   
99+
69.72 amu   
99+

Atomic Volume
20.73 cm3/mol   
16
11.80 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

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Barium
  
Zinc
  

Next Element
Cerium
  
Rubidium
  

Valence Electron Potential
40.71 (-eV)   
99+
69.70 (-eV)   
19

Lattice Constant
377.20 pm   
28
451.97 pm   
18

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
1.62   
2
Not Available   

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