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Atomic Structure of Neptunium and Europium

Neptunium
Europium
Atomic Structure of Europium and Neptunium


Atomic Properties
Atomic Number
93   
25
63   
99+
Electron Configuration
[Rn] 5f4 6d1 7s2   
[Xe] 4f7 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
63   
99+
Number of Neutrons
144   
14
89   
38
Number of Electrons
93   
25
63   
99+
Radius of an Atom
  
  
Atomic Radius
155.00 pm   
30
180.00 pm   
14
Covalent Radius
190.00 pm   
18
198.00 pm   
13
Van der Waals Radius
221.00 pm   
22
233.00 pm   
18
Atomic Weight
237.00 amu   
22
151.96 amu   
99+
Atomic Volume
11.62 cm3/mol   
99+
28.90 cm3/mol   
8
Adjacent Atomic Numbers
  
  
Previous Element
Uranium
  
Samarium
  
Next Element
Plutonium
  
Gadolinium
  
Valence Electron Potential
96.00 (-eV)   
9
45.60 (-eV)   
35
Lattice Constant
666.30 pm   
3
458.10 pm   
17
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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