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Atomic Structure of Cesium and Neptunium

Cesium
Neptunium
Atomic Structure of Neptunium and Cesium


Atomic Properties
Atomic Number
55   
99+
93   
25
Electron Configuration
[Xe] 6s1   
[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
55   
99+
93   
25
Number of Neutrons
78   
99+
144   
14
Number of Electrons
55   
99+
93   
25
Radius of an Atom
  
  
Atomic Radius
265.00 pm   
1
155.00 pm   
30
Covalent Radius
244.00 pm   
2
190.00 pm   
18
Van der Waals Radius
343.00 pm   
2
221.00 pm   
22
Atomic Weight
132.91 amu   
99+
237.00 amu   
22
Atomic Volume
71.07 cm3/mol   
1
11.62 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Tin
  
Uranium
  
Next Element
Barium
  
Plutonium
  
Valence Electron Potential
8.62 (-eV)   
99+
96.00 (-eV)   
9
Lattice Constant
614.10 pm   
5
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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