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Atomic Structure of Beryllium and Hafnium

Beryllium
Hafnium
Atomic Structure of Hafnium and Beryllium


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