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Atomic Structure of Neptunium and Technetium


Atomic Structure of Technetium and Neptunium


Atomic Properties

Atomic Number
93   
25
43   
99+

Electron Configuration
[Rn] 5f4 6d1 7s2   
[Kr] 4d5 5s2   

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

Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   

Atom
  
  

Number of Protons
93   
25
43   
99+

Number of Neutrons
144   
14
55   
99+

Number of Electrons
93   
25
43   
99+

Radius of an Atom
  
  

Atomic Radius
155.00 pm   
30
136.00 pm   
99+

Covalent Radius
190.00 pm   
18
147.00 pm   
37

Van der Waals Radius
221.00 pm   
22
200.00 pm   
28

Atomic Weight
237.00 amu   
22
98.00 amu   
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Uranium
  
Molybdenum
  

Next Element
Plutonium
  
Ruthenium
  

Valence Electron Potential
96.00 (-eV)   
9
180.00 (-eV)   
3

Lattice Constant
666.30 pm   
3
273.50 pm   
99+

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

Lattice C/A Ratio
Not Available   
1.60   
5

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