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Atomic Structure of Hafnium and Neptunium


Atomic Structure of Neptunium and Hafnium


Atomic Properties

Atomic Number
72   
99+
93   
25

Electron Configuration
[Xe] 4f14 5d2 6s2   
[Rn] 5f4 6d1 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Orthorhombic (ORTH)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
ORTH-Crystal-Structure-of-Neptunium.jpg#100   

Atom
  
  

Number of Protons
72   
99+
93   
25

Number of Neutrons
106   
29
144   
14

Number of Electrons
72   
99+
93   
25

Radius of an Atom
  
  

Atomic Radius
159.00 pm   
28
155.00 pm   
30

Covalent Radius
175.00 pm   
23
190.00 pm   
18

Van der Waals Radius
200.00 pm   
28
221.00 pm   
22

Atomic Weight
178.49 amu   
39
237.00 amu   
22

Atomic Volume
13.60 cm3/mol   
38
11.62 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Lutetium
  
Uranium
  

Next Element
Tantalum
  
Plutonium
  

Valence Electron Potential
81.00 (-eV)   
16
96.00 (-eV)   
9

Lattice Constant
319.64 pm   
99+
666.30 pm   
3

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
1.58   
12
Not Available   

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