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Atomic Structure of Holmium and Thulium


Atomic Structure of Thulium and Holmium


Atomic Properties

Atomic Number
67   
99+
69   
99+

Electron Configuration
[Xe] 4f11 6s2   
[Xe] 4f13 6s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
HCP-Crystal-Structure-of-Holmium.jpg#100   
HCP-Crystal-Structure-of-Thulium.jpg#100   

Atom
  
  

Number of Protons
67   
99+
69   
99+

Number of Neutrons
98   
34
100   
32

Number of Electrons
67   
99+
69   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
176.00 pm   
18

Covalent Radius
192.00 pm   
17
160.00 pm   
30

Van der Waals Radius
216.00 pm   
24
Not Available   

Atomic Weight
164.93 amu   
99+
168.93 amu   
99+

Atomic Volume
18.70 cm3/mol   
24
18.10 cm3/mol   
28

Adjacent Atomic Numbers
  
  

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Dysprosium
  
Erbium
  

Next Element
Erbium
  
Ytterbium
  

Valence Electron Potential
47.90 (-eV)   
31
49.70 (-eV)   
28

Lattice Constant
357.73 pm   
38
353.75 pm   
40

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

Lattice C/A Ratio
1.57   
17
1.57   
17

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