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Atomic Structure of Thallium and Samarium

Thallium
Samarium
Atomic Structure of Samarium and Thallium


Atomic Properties
Atomic Number
81   
35
62   
99+
Electron Configuration
[Xe] 4f14 5d10 6s2 6p1   
[Xe] 4f6 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Rhombohedral (RHO)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
RHO-Crystal-Structure-of-Samarium.jpg#100   
Atom
  
  
Number of Protons
81   
35
62   
99+
Number of Neutrons
123   
20
88   
39
Number of Electrons
81   
35
62   
99+
Radius of an Atom
  
  
Atomic Radius
170.00 pm   
22
180.00 pm   
14
Covalent Radius
145.00 pm   
39
198.00 pm   
13
Van der Waals Radius
196.00 pm   
30
229.00 pm   
20
Atomic Weight
204.38 amu   
31
150.36 amu   
99+
Atomic Volume
17.20 cm3/mol   
31
19.95 cm3/mol   
19
Adjacent Atomic Numbers
  
  
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Mercury
  
Promethium
  
Next Element
Lead
  
Europium
  
Valence Electron Potential
9.60 (-eV)   
99+
44.80 (-eV)   
37
Lattice Constant
345.66 pm   
99+
362.10 pm   
33
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.60   
6
Not Available   
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