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Atomic Structure of Erbium and Thallium

Erbium
Thallium
Atomic Structure of Thallium and Erbium


Atomic Properties
Atomic Number
68   
99+
81   
35
Electron Configuration
[Xe] 4f12 6s2   
[Xe] 4f14 5d10 6s2 6p1   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Erbium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
68   
99+
81   
35
Number of Neutrons
99   
33
123   
20
Number of Electrons
68   
99+
81   
35
Radius of an Atom
  
  
Atomic Radius
176.00 pm   
18
170.00 pm   
22
Covalent Radius
189.00 pm   
19
145.00 pm   
39
Van der Waals Radius
Not Available   
196.00 pm   
30
Atomic Weight
167.26 amu   
99+
204.38 amu   
31
Atomic Volume
18.40 cm3/mol   
25
17.20 cm3/mol   
31
Adjacent Atomic Numbers
  
  
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Holmium
  
Mercury
  
Next Element
Thulium
  
Lead
  
Valence Electron Potential
49.00 (-eV)   
29
9.60 (-eV)   
99+
Lattice Constant
355.88 pm   
39
345.66 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.57   
17
1.60   
6
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