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Atomic Structure of Holmium and Neptunium


Atomic Structure of Neptunium and Holmium


Atomic Properties

Atomic Number
67   
99+
93   
25

Electron Configuration
[Xe] 4f11 6s2   
[Rn] 5f4 6d1 7s2   

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

Crystal Lattice
HCP-Crystal-Structure-of-Holmium.jpg#100   
ORTH-Crystal-Structure-of-Neptunium.jpg#100   

Atom
  
  

Number of Protons
67   
99+
93   
25

Number of Neutrons
98   
34
144   
14

Number of Electrons
67   
99+
93   
25

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
155.00 pm   
30

Covalent Radius
192.00 pm   
17
190.00 pm   
18

Van der Waals Radius
216.00 pm   
24
221.00 pm   
22

Atomic Weight
164.93 amu   
99+
237.00 amu   
22

Atomic Volume
18.70 cm3/mol   
24
11.62 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Dysprosium
  
Uranium
  

Next Element
Erbium
  
Plutonium
  

Valence Electron Potential
47.90 (-eV)   
31
96.00 (-eV)   
9

Lattice Constant
357.73 pm   
38
666.30 pm   
3

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

Lattice C/A Ratio
1.57   
17
Not Available   

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