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Atomic Structure of Technetium and Actinium


Atomic Structure of Actinium and Technetium


Atomic Properties

Atomic Number
43   
99+
89   
29

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

Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100   
FCC-Crystal-Structure-of-Actinium.jpg#100   

Atom
  
  

Number of Protons
43   
99+
89   
29

Number of Neutrons
55   
99+
138   
16

Number of Electrons
43   
99+
89   
29

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
195.00 pm   
7

Covalent Radius
147.00 pm   
37
Not Available   

Van der Waals Radius
200.00 pm   
28
Not Available   

Atomic Weight
98.00 amu   
99+
227.00 amu   
25

Atomic Volume
8.50 cm3/mol   
99+
22.54 cm3/mol   
11

Adjacent Atomic Numbers
  
  

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Ruthenium
  
Thorium
  

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

Lattice Constant
273.50 pm   
99+
567.00 pm   
8

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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