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Atomic Structure of Terbium and Erbium


Atomic Structure of Erbium and Terbium


Atomic Properties

Atomic Number
65   
99+
68   
99+

Electron Configuration
[Xe] 4f9 6s2   
[Xe] 4f12 6s2   

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

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

Atom
  
  

Number of Protons
65   
99+
68   
99+

Number of Neutrons
94   
36
99   
33

Number of Electrons
65   
99+
68   
99+

Radius of an Atom
  
  

Atomic Radius
177.00 pm   
17
176.00 pm   
18

Covalent Radius
194.00 pm   
16
189.00 pm   
19

Van der Waals Radius
221.00 pm   
22
Not Available   

Atomic Weight
158.93 amu   
99+
167.26 amu   
99+

Atomic Volume
19.20 cm3/mol   
22
18.40 cm3/mol   
25

Adjacent Atomic Numbers
  
  

Previous Element
Gadolinium
  
Holmium
  

Next Element
Dysprosium
  
Thulium
  

Valence Electron Potential
46.80 (-eV)   
33
49.00 (-eV)   
29

Lattice Constant
360.10 pm   
36
355.88 pm   
39

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

Lattice C/A Ratio
1.58   
13
1.57   
17

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