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Atomic Structure of Cesium and Erbium


Atomic Structure of Erbium and Cesium


Atomic Properties

Atomic Number
55   
99+
68   
99+

Electron Configuration
[Xe] 6s1   
[Xe] 4f12 6s2   

Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   

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

Atom
  
  

Number of Protons
55   
99+
68   
99+

Number of Neutrons
78   
99+
99   
33

Number of Electrons
55   
99+
68   
99+

Radius of an Atom
  
  

Atomic Radius
265.00 pm   
1
176.00 pm   
18

Covalent Radius
244.00 pm   
2
189.00 pm   
19

Van der Waals Radius
343.00 pm   
2
Not Available   

Atomic Weight
132.91 amu   
99+
167.26 amu   
99+

Atomic Volume
71.07 cm3/mol   
1
18.40 cm3/mol   
25

Adjacent Atomic Numbers
  
  

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Barium
  
Thulium
  

Valence Electron Potential
8.62 (-eV)   
99+
49.00 (-eV)   
29

Lattice Constant
614.10 pm   
5
355.88 pm   
39

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

Lattice C/A Ratio
Not Available   
1.57   
17

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