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Atomic Structure of Erbium and Thorium


Atomic Structure of Thorium and Erbium


Atomic Properties

Atomic Number
68   
99+
90   
28

Electron Configuration
[Xe] 4f12 6s2   
[Rn] 6d2 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Erbium.jpg#100   
FCC-Crystal-Structure-of-Thorium.jpg#100   

Atom
  
  

Number of Protons
68   
99+
90   
28

Number of Neutrons
99   
33
142   
15

Number of Electrons
68   
99+
90   
28

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
179.80 pm   
15

Covalent Radius
189.00 pm   
19
206.00 pm   
7

Van der Waals Radius
Not Available   
237.00 pm   
15

Atomic Weight
167.26 amu   
99+
232.04 amu   
23

Atomic Volume
18.40 cm3/mol   
25
19.90 cm3/mol   
20

Adjacent Atomic Numbers
  
  

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Holmium
  
Actinium
  

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Thulium
  

Valence Electron Potential
49.00 (-eV)   
29
59.30 (-eV)   
23

Lattice Constant
355.88 pm   
39
508.42 pm   
14

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

Lattice C/A Ratio
1.57   
17
Not Available   

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