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Atomic Structure of Tantalum and Neptunium

Tantalum
Neptunium
Atomic Structure of Neptunium and Tantalum


Atomic Properties
Atomic Number
73   
99+
93   
25
Electron Configuration
[Xe] 4f14 5d3 6s2   
[Rn] 5f4 6d1 7s2   
Crystal Structure
Body Centered Cubic (BCC)   
Orthorhombic (ORTH)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
Atom
  
  
Number of Protons
73   
99+
93   
25
Number of Neutrons
108   
28
144   
14
Number of Electrons
73   
99+
93   
25
Radius of an Atom
  
  
Atomic Radius
146.00 pm   
35
155.00 pm   
30
Covalent Radius
170.00 pm   
25
190.00 pm   
18
Van der Waals Radius
200.00 pm   
28
221.00 pm   
22
Atomic Weight
180.95 amu   
38
237.00 amu   
22
Atomic Volume
10.90 cm3/mol   
99+
11.62 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Hafnium
  
Uranium
  
Next Element
Tungsten
  
Plutonium
  
Valence Electron Potential
110.00 (-eV)   
7
96.00 (-eV)   
9
Lattice Constant
330.13 pm   
99+
666.30 pm   
3
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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