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Atomic Structure of Neptunium and Calcium


Atomic Structure of Calcium and Neptunium


Atomic Properties

Atomic Number
93   
25
20   
99+

Electron Configuration
[Rn] 5f4 6d1 7s2   
[Ar] 4s2   

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

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

Atom
  
  

Number of Protons
93   
25
20   
99+

Number of Neutrons
144   
14
20   
99+

Number of Electrons
93   
25
20   
99+

Radius of an Atom
  
  

Atomic Radius
155.00 pm   
30
197.00 pm   
6

Covalent Radius
190.00 pm   
18
176.00 pm   
22

Van der Waals Radius
221.00 pm   
22
231.00 pm   
19

Atomic Weight
237.00 amu   
22
40.08 amu   
99+

Atomic Volume
11.62 cm3/mol   
99+
29.90 cm3/mol   
7

Adjacent Atomic Numbers
  
  

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Uranium
  
Potassium
  

Next Element
Plutonium
  
Scandium
  

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

Lattice Constant
666.30 pm   
3
558.84 pm   
9

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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