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Atomic Structure of Neptunium and Actinium


Atomic Structure of Actinium and Neptunium


Atomic Properties

Atomic Number
93   
25
89   
29

Electron Configuration
[Rn] 5f4 6d1 7s2   
[Rn] 6d1 7s2   

Crystal Structure
Orthorhombic (ORTH)   
Face Centered Cubic (FCC)   

Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
FCC-Crystal-Structure-of-Actinium.jpg#100   

Atom
  
  

Number of Protons
93   
25
89   
29

Number of Neutrons
144   
14
138   
16

Number of Electrons
93   
25
89   
29

Radius of an Atom
  
  

Atomic Radius
155.00 pm   
30
195.00 pm   
7

Covalent Radius
190.00 pm   
18
Not Available   

Van der Waals Radius
221.00 pm   
22
Not Available   

Atomic Weight
237.00 amu   
22
227.00 amu   
25

Atomic Volume
11.62 cm3/mol   
99+
22.54 cm3/mol   
11

Adjacent Atomic Numbers
  
  

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Uranium
  
Radium
  

Next Element
Plutonium
  
Thorium
  

Valence Electron Potential
96.00 (-eV)   
9
38.60 (-eV)   
99+

Lattice Constant
666.30 pm   
3
567.00 pm   
8

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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