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Atomic Structure of Thulium and Thallium


Atomic Structure of Thallium and Thulium


Atomic

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  
33
123  
21

Number of Electrons
69  
99+
81  
35

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
170.00 pm  
24

Covalent Radius
160.00 pm  
32
145.00 pm  
99+

Van der Waals Radius
227.00 pm  
26
196.00 pm  
37

Atomic Weight
168.93 amu  
99+
204.38 amu  
31

Atomic Volume
18.10 cm3/mol  
40
17.20 cm3/mol  
99+

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  
Mercury
  

Next Element
Ytterbium
  
Lead
  

Valence Electron Potential
49.70 (-eV)  
29
9.60 (-eV)  
99+

Lattice Constant
353.75 pm  
99+
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  
40
1.60  
23

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