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Atomic Structure of Radium and Hafnium

Radium
Hafnium
Atomic Structure of Hafnium and Radium


Atomic Properties
Atomic Number
88   
30
72   
99+
Electron Configuration
[Rn] 7s2   
[Xe] 4f14 5d2 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
88   
30
72   
99+
Number of Neutrons
138   
16
106   
29
Number of Electrons
88   
30
72   
99+
Radius of an Atom
  
  
Atomic Radius
Not Available   
159.00 pm   
28
Covalent Radius
221.00 pm   
3
175.00 pm   
23
Van der Waals Radius
283.00 pm   
4
200.00 pm   
28
Atomic Weight
226.00 amu   
26
178.49 amu   
39
Atomic Volume
45.20 cm3/mol   
4
13.60 cm3/mol   
38
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Lutetium
  
Next Element
Actinium
  
Tantalum
  
Valence Electron Potential
20.10 (-eV)   
99+
81.00 (-eV)   
16
Lattice Constant
514.80 pm   
13
319.64 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.58   
12
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