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Atomic Structure of Technetium and Neptunium


Atomic Structure of Neptunium and Technetium


Atomic Properties

Atomic Number
43   
99+
93   
25

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

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

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

Atom
  
  

Number of Protons
43   
99+
93   
25

Number of Neutrons
55   
99+
144   
14

Number of Electrons
43   
99+
93   
25

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
155.00 pm   
30

Covalent Radius
147.00 pm   
37
190.00 pm   
18

Van der Waals Radius
200.00 pm   
28
221.00 pm   
22

Atomic Weight
98.00 amu   
99+
237.00 amu   
22

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

Adjacent Atomic Numbers
  
  

Previous Element
Molybdenum
  
Uranium
  

Next Element
Ruthenium
  
Plutonium
  

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

Lattice Constant
273.50 pm   
99+
666.30 pm   
3

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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