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Atomic Structure of Hafnium and Holmium


Atomic Structure of Holmium and Hafnium


Atomic Properties

Atomic Number
72   
99+
67   
99+

Electron Configuration
[Xe] 4f14 5d2 6s2   
[Xe] 4f11 6s2   

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

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Holmium.jpg#100   

Atom
  
  

Number of Protons
72   
99+
67   
99+

Number of Neutrons
106   
29
98   
34

Number of Electrons
72   
99+
67   
99+

Radius of an Atom
  
  

Atomic Radius
159.00 pm   
28
176.00 pm   
18

Covalent Radius
175.00 pm   
23
192.00 pm   
17

Van der Waals Radius
200.00 pm   
28
216.00 pm   
24

Atomic Weight
178.49 amu   
39
164.93 amu   
99+

Atomic Volume
13.60 cm3/mol   
38
18.70 cm3/mol   
24

Adjacent Atomic Numbers
  
  

Previous Element
Lutetium
  
Dysprosium
  

Next Element
Tantalum
  
Erbium
  

Valence Electron Potential
81.00 (-eV)   
16
47.90 (-eV)   
31

Lattice Constant
319.64 pm   
99+
357.73 pm   
38

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

Lattice C/A Ratio
1.58   
12
1.57   
17

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