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Atomic Structure of Hafnium and Radium


Atomic Structure of Radium and Hafnium


Atomic Properties

Atomic Number
72   
99+
88   
30

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

Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
72   
99+
88   
30

Number of Neutrons
106   
29
138   
16

Number of Electrons
72   
99+
88   
30

Radius of an Atom
  
  

Atomic Radius
159.00 pm   
28
Not Available   

Covalent Radius
175.00 pm   
23
221.00 pm   
3

Van der Waals Radius
200.00 pm   
28
283.00 pm   
4

Atomic Weight
178.49 amu   
39
226.00 amu   
26

Atomic Volume
13.60 cm3/mol   
38
45.20 cm3/mol   
4

Adjacent Atomic Numbers
  
  

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Lutetium
  
Francium
  

Next Element
Tantalum
  
Actinium
  

Valence Electron Potential
81.00 (-eV)   
16
20.10 (-eV)   
99+

Lattice Constant
319.64 pm   
99+
514.80 pm   
13

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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