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Atomic Structure of Beryllium and Erbium


Atomic Structure of Erbium and Beryllium


Atomic Properties

Atomic Number
4   
99+
68   
99+

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

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

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

Atom
  
  

Number of Protons
4   
99+
68   
99+

Number of Neutrons
5   
99+
99   
33

Number of Electrons
4   
99+
68   
99+

Radius of an Atom
  
  

Atomic Radius
112.00 pm   
99+
176.00 pm   
18

Covalent Radius
96.00 pm   
99+
189.00 pm   
19

Van der Waals Radius
153.00 pm   
99+
Not Available   

Atomic Weight
9.01 amu   
99+
167.26 amu   
99+

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

Adjacent Atomic Numbers
  
  

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Sodium
  
Thulium
  

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

Lattice Constant
228.58 pm   
99+
355.88 pm   
39

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

Lattice C/A Ratio
1.57   
18
1.57   
17

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