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Atomic Structure of Actinium and Neptunium


Atomic Structure of Neptunium and Actinium


Atomic Properties

Atomic Number
89   
29
93   
25

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

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

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

Atom
  
  

Number of Protons
89   
29
93   
25

Number of Neutrons
138   
16
144   
14

Number of Electrons
89   
29
93   
25

Radius of an Atom
  
  

Atomic Radius
195.00 pm   
7
155.00 pm   
30

Covalent Radius
Not Available   
190.00 pm   
18

Van der Waals Radius
Not Available   
221.00 pm   
22

Atomic Weight
227.00 amu   
25
237.00 amu   
22

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

Adjacent Atomic Numbers
  
  

Previous Element
Radium
  
Uranium
  

Next Element
Thorium
  
Plutonium
  

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

Lattice Constant
567.00 pm   
8
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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