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Atomic Structure of Technetium and Protactinium


Atomic Structure of Protactinium and Technetium


Atomic Properties

Atomic Number
43   
99+
91   
27

Electron Configuration
[Kr] 4d5 5s2   
[Rn] 5f2 6d1 7s2   

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

Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   

Atom
  
  

Number of Protons
43   
99+
91   
27

Number of Neutrons
55   
99+
122   
21

Number of Electrons
43   
99+
91   
27

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
163.00 pm   
25

Covalent Radius
147.00 pm   
37
200.00 pm   
11

Van der Waals Radius
200.00 pm   
28
243.00 pm   
11

Atomic Weight
98.00 amu   
99+
231.04 amu   
24

Atomic Volume
8.50 cm3/mol   
99+
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

Previous Element
Molybdenum
  
Thorium
  

Next Element
Ruthenium
  
Uranium
  

Valence Electron Potential
180.00 (-eV)   
3
92.00 (-eV)   
11

Lattice Constant
273.50 pm   
99+
392.50 pm   
23

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

Lattice C/A Ratio
1.60   
5
Not Available   

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