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Atomic Structure of Thorium and Lanthanum


Atomic Structure of Lanthanum and Thorium


Atomic Properties

Atomic Number
90   
28
57   
99+

Electron Configuration
[Rn] 6d2 7s2   
[Xe] 5d2 6s2   

Crystal Structure
Face Centered Cubic (FCC)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
FCC-Crystal-Structure-of-Thorium.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   

Atom
  
  

Number of Protons
90   
28
57   
99+

Number of Neutrons
142   
15
82   
99+

Number of Electrons
90   
28
57   
99+

Radius of an Atom
  
  

Atomic Radius
179.80 pm   
15
187.00 pm   
8

Covalent Radius
206.00 pm   
7
207.00 pm   
6

Van der Waals Radius
237.00 pm   
15
240.00 pm   
13

Atomic Weight
232.04 amu   
23
138.91 amu   
99+

Atomic Volume
19.90 cm3/mol   
20
20.73 cm3/mol   
16

Adjacent Atomic Numbers
  
  

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Barium
  

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Cerium
  

Valence Electron Potential
59.30 (-eV)   
23
40.71 (-eV)   
99+

Lattice Constant
508.42 pm   
14
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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