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Atomic Structure of Erbium and Cesium


Atomic Structure of Cesium and Erbium


Atomic Properties

Atomic Number
68   
99+
55   
99+

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

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

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

Atom
  
  

Number of Protons
68   
99+
55   
99+

Number of Neutrons
99   
33
78   
99+

Number of Electrons
68   
99+
55   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
265.00 pm   
1

Covalent Radius
189.00 pm   
19
244.00 pm   
2

Van der Waals Radius
Not Available   
343.00 pm   
2

Atomic Weight
167.26 amu   
99+
132.91 amu   
99+

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

Adjacent Atomic Numbers
  
  

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

Lattice Constant
355.88 pm   
39
614.10 pm   
5

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

Lattice C/A Ratio
1.57   
17
Not Available   

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