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Atomic Structure of Thallium and Technetium


Atomic Structure of Technetium and Thallium


Atomic

Atomic Number
81  
35
43  
99+

Electron Configuration
[Xe] 4f14 5d10 6s2 6p1  
[Kr] 4d5 5s2  

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

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

Atom
  
  

Number of Protons
81  
35
43  
99+

Number of Neutrons
123  
21
55  
99+

Number of Electrons
81  
35
43  
99+

Radius of an Atom
  
  

Atomic Radius
170.00 pm  
24
136.00 pm  
99+

Covalent Radius
145.00 pm  
99+
147.00 pm  
39

Van der Waals Radius
196.00 pm  
37
200.00 pm  
35

Atomic Weight
204.38 amu  
31
98.00 amu  
99+

Atomic Volume
17.20 cm3/mol  
99+
8.50 cm3/mol  
99+

Adjacent Atomic Numbers
  
  

Previous Element
Mercury
  

Next Element
Lead
  
Ruthenium
  

Valence Electron Potential
9.60 (-eV)  
99+
180.00 (-eV)  
3

Lattice Constant
345.66 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
1.60  
23
1.60  
21

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