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Atomic Structure of Lanthanum and Sodium

Lanthanum
Sodium
Atomic Structure of Sodium and Lanthanum


Atomic Properties
Atomic Number
57   
99+
11   
99+
Electron Configuration
[Xe] 5d2 6s2   
[Ne] 3s1   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Body Centered Cubic (BCC)   
Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
57   
99+
11   
99+
Number of Neutrons
82   
99+
12   
99+
Number of Electrons
57   
99+
11   
99+
Radius of an Atom
  
  
Atomic Radius
187.00 pm   
8
186.00 pm   
9
Covalent Radius
207.00 pm   
6
166.00 pm   
27
Van der Waals Radius
240.00 pm   
13
227.00 pm   
21
Atomic Weight
138.91 amu   
99+
22.99 amu   
99+
Atomic Volume
20.73 cm3/mol   
16
23.70 cm3/mol   
10
Adjacent Atomic Numbers
  
  
Previous Element
Barium
  
Beryllium
  
Next Element
Cerium
  
Magnesium
  
Valence Electron Potential
40.71 (-eV)   
99+
14.10 (-eV)   
99+
Lattice Constant
377.20 pm   
28
429.06 pm   
19
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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Lanthanide Metals

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