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Atomic Structure of Neptunium and Tantalum


Atomic Structure of Tantalum and Neptunium


Atomic Properties

Atomic Number
93   
25
73   
99+

Electron Configuration
[Rn] 5f4 6d1 7s2   
[Xe] 4f14 5d3 6s2   

Crystal Structure
Orthorhombic (ORTH)   
Body Centered Cubic (BCC)   

Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
93   
25
73   
99+

Number of Neutrons
144   
14
108   
28

Number of Electrons
93   
25
73   
99+

Radius of an Atom
  
  

Atomic Radius
155.00 pm   
30
146.00 pm   
35

Covalent Radius
190.00 pm   
18
170.00 pm   
25

Van der Waals Radius
221.00 pm   
22
200.00 pm   
28

Atomic Weight
237.00 amu   
22
180.95 amu   
38

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

Adjacent Atomic Numbers
  
  

Previous Element
Uranium
  
Hafnium
  

Next Element
Plutonium
  
Tungsten
  

Valence Electron Potential
96.00 (-eV)   
9
110.00 (-eV)   
7

Lattice Constant
666.30 pm   
3
330.13 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

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