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Atomic Structure of Erbium and Beryllium


Atomic Structure of Beryllium and Erbium


Atomic Properties

Atomic Number
68   
99+
4   
99+

Electron Configuration
[Xe] 4f12 6s2   
[He] 2s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
HCP-Crystal-Structure-of-Erbium.jpg#100   
HCP-Crystal-Structure-of-Beryllium.jpg#100   

Atom
  
  

Number of Protons
68   
99+
4   
99+

Number of Neutrons
99   
33
5   
99+

Number of Electrons
68   
99+
4   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
112.00 pm   
99+

Covalent Radius
189.00 pm   
19
96.00 pm   
99+

Van der Waals Radius
Not Available   
153.00 pm   
99+

Atomic Weight
167.26 amu   
99+
9.01 amu   
99+

Atomic Volume
18.40 cm3/mol   
25
5.00 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

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Thulium
  
Sodium
  

Valence Electron Potential
49.00 (-eV)   
29
82.00 (-eV)   
15

Lattice Constant
355.88 pm   
39
228.58 pm   
99+

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

Lattice C/A Ratio
1.57   
17
1.57   
18

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