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Atomic Structure of Thulium and Dysprosium


Atomic Structure of Dysprosium and Thulium


Atomic Properties

Atomic Number
69   
99+
66   
99+

Electron Configuration
[Xe] 4f13 6s2   
[Xe] 4f9 6s2   

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

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

Atom
  
  

Number of Protons
69   
99+
66   
99+

Number of Neutrons
100   
32
96   
35

Number of Electrons
69   
99+
66   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
178.00 pm   
16

Covalent Radius
160.00 pm   
30
192.00 pm   
17

Van der Waals Radius
Not Available   
229.00 pm   
20

Atomic Weight
168.93 amu   
99+
162.50 amu   
99+

Atomic Volume
18.10 cm3/mol   
28
19.00 cm3/mol   
23

Adjacent Atomic Numbers
  
  

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Erbium
  
Terbium
  

Next Element
Ytterbium
  
Holmium
  

Valence Electron Potential
49.70 (-eV)   
28
47.40 (-eV)   
32

Lattice Constant
353.75 pm   
40
359.30 pm   
37

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   
15

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