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Atomic Structure of Hafnium and Beryllium

Hafnium
Beryllium
Atomic Structure of Beryllium and Hafnium


Atomic Properties
Atomic Number
72   
99+
4   
99+
Electron Configuration
[Xe] 4f14 5d2 6s2   
[He] 2s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Beryllium.jpg#100   
Atom
  
  
Number of Protons
72   
99+
4   
99+
Number of Neutrons
106   
29
5   
99+
Number of Electrons
72   
99+
4   
99+
Radius of an Atom
  
  
Atomic Radius
159.00 pm   
28
112.00 pm   
99+
Covalent Radius
175.00 pm   
23
96.00 pm   
99+
Van der Waals Radius
200.00 pm   
28
153.00 pm   
99+
Atomic Weight
178.49 amu   
39
9.01 amu   
99+
Atomic Volume
13.60 cm3/mol   
38
5.00 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
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Lutetium
  
Lithium
  
Next Element
Tantalum
  
Sodium
  
Valence Electron Potential
81.00 (-eV)   
16
82.00 (-eV)   
15
Lattice Constant
319.64 pm   
99+
228.58 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.58   
12
1.57   
18
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