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Atomic Structure of Lutetium and Beryllium

Lutetium
Beryllium
Atomic Structure of Beryllium and Lutetium


Atomic Properties
Atomic Number
71   
99+
4   
99+
Electron Configuration
[Xe] 6s2 4f14 5d1   
[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
71   
99+
4   
99+
Number of Neutrons
104   
30
5   
99+
Number of Electrons
71   
99+
4   
99+
Radius of an Atom
  
  
Atomic Radius
174.00 pm   
20
112.00 pm   
99+
Covalent Radius
187.00 pm   
20
96.00 pm   
99+
Van der Waals Radius
221.00 pm   
22
153.00 pm   
99+
Atomic Weight
174.97 amu   
40
9.01 amu   
99+
Atomic Volume
17.78 cm3/mol   
30
5.00 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Ytterbium
  
Lithium
  
Next Element
Hafnium
  
Sodium
  
Valence Electron Potential
50.90 (-eV)   
26
82.00 (-eV)   
15
Lattice Constant
350.31 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
1.59   
10
1.57   
18
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