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Atomic Structure of Francium and Hafnium


Atomic Structure of Hafnium and Francium


Atomic Properties

Atomic Number
87   
31
72   
99+

Electron Configuration
[Rn] 7s1   
[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
87   
31
72   
99+

Number of Neutrons
136   
17
106   
29

Number of Electrons
87   
31
72   
99+

Radius of an Atom
  
  

Atomic Radius
Not Available   
159.00 pm   
28

Covalent Radius
260.00 pm   
1
175.00 pm   
23

Van der Waals Radius
348.00 pm   
1
200.00 pm   
28

Atomic Weight
223.00 amu   
27
178.49 amu   
39

Atomic Volume
Not Available   
13.60 cm3/mol   
38

Adjacent Atomic Numbers
  
  

Previous Element
Polonium
  
Lutetium
  

Next Element
Radium
  
Tantalum
  

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

Lattice Constant
Not Available   
319.64 pm   
99+

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

Lattice C/A Ratio
Not Available   
1.58   
12

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