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Atomic Structure of Thulium and Technetium


Atomic Structure of Technetium and Thulium


Atomic

Atomic Number
69  
99+
43  
99+

Electron Configuration
[Xe] 4f13 6s2  
[Kr] 4d5 5s2  

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

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

Atom
  
  

Number of Protons
69  
99+
43  
99+

Number of Neutrons
100  
33
55  
99+

Number of Electrons
69  
99+
43  
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
136.00 pm  
99+

Covalent Radius
160.00 pm  
32
147.00 pm  
39

Van der Waals Radius
227.00 pm  
26
200.00 pm  
35

Atomic Weight
168.93 amu  
99+
98.00 amu  
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  

Next Element
Ytterbium
  
Ruthenium
  

Valence Electron Potential
49.70 (-eV)  
29
180.00 (-eV)  
3

Lattice Constant
353.75 pm  
99+
273.50 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  
21

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