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Atomic Structure of Thallium and Thulium


Atomic Structure of Thulium and Thallium


Atomic

Atomic Number
81  
35
69  
99+

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

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

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

Atom
  
  

Number of Protons
81  
35
69  
99+

Number of Neutrons
123  
21
100  
33

Number of Electrons
81  
35
69  
99+

Radius of an Atom
  
  

Atomic Radius
170.00 pm  
24
176.00 pm  
20

Covalent Radius
145.00 pm  
99+
160.00 pm  
32

Van der Waals Radius
196.00 pm  
37
227.00 pm  
26

Atomic Weight
204.38 amu  
31
168.93 amu  
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Mercury
  
Erbium
  

Next Element
Lead
  
Ytterbium
  

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

Lattice Constant
345.66 pm  
99+
353.75 pm  
99+

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

Lattice C/A Ratio
1.60  
23
1.57  
40

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