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Atomic Structure of Gadolinium and Thallium

Gadolinium
Thallium
Atomic Structure of Thallium and Gadolinium


Atomic Properties
Atomic Number
64   
99+
81   
35
Electron Configuration
[Xe] 4f7 5d1 6s2   
[Xe] 4f14 5d10 6s2 6p1   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Gadolinium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
64   
99+
81   
35
Number of Neutrons
93   
37
123   
20
Number of Electrons
64   
99+
81   
35
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
170.00 pm   
22
Covalent Radius
196.00 pm   
14
145.00 pm   
39
Van der Waals Radius
237.00 pm   
15
196.00 pm   
30
Atomic Weight
47.87 amu   
99+
204.38 amu   
31
Atomic Volume
19.90 cm3/mol   
20
17.20 cm3/mol   
31
Adjacent Atomic Numbers
  
  
Previous Element
Europium
  
Mercury
  
Next Element
Terbium
  
Lead
  
Valence Electron Potential
46.10 (-eV)   
34
9.60 (-eV)   
99+
Lattice Constant
363.60 pm   
32
345.66 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.59   
9
1.60   
6
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