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Atomic Structure of Thulium and Thallium


Atomic Structure of Thallium and Thulium


Atomic Properties

Atomic Number
69   
99+
81   
35

Electron Configuration
[Xe] 4f13 6s2   
[Xe] 4f14 5d10 6s2 6p1   

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

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

Atom
  
  

Number of Protons
69   
99+
81   
35

Number of Neutrons
100   
32
123   
20

Number of Electrons
69   
99+
81   
35

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
170.00 pm   
22

Covalent Radius
160.00 pm   
30
145.00 pm   
39

Van der Waals Radius
Not Available   
196.00 pm   
30

Atomic Weight
168.93 amu   
99+
204.38 amu   
31

Atomic Volume
18.10 cm3/mol   
28
17.20 cm3/mol   
31

Adjacent Atomic Numbers
  
  

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Erbium
  
Mercury
  

Next Element
Ytterbium
  
Lead
  

Valence Electron Potential
49.70 (-eV)   
28
9.60 (-eV)   
99+

Lattice Constant
353.75 pm   
40
345.66 pm   
99+

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

Lattice C/A Ratio
1.57   
17
1.60   
6

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