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Atomic Structure of Thallium and Radium

Thallium
Radium
Atomic Structure of Radium and Thallium


Atomic Properties
Atomic Number
81   
35
88   
30
Electron Configuration
[Xe] 4f14 5d10 6s2 6p1   
[Rn] 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
81   
35
88   
30
Number of Neutrons
123   
20
138   
16
Number of Electrons
81   
35
88   
30
Radius of an Atom
  
  
Atomic Radius
170.00 pm   
22
Not Available   
Covalent Radius
145.00 pm   
39
221.00 pm   
3
Van der Waals Radius
196.00 pm   
30
283.00 pm   
4
Atomic Weight
204.38 amu   
31
226.00 amu   
26
Atomic Volume
17.20 cm3/mol   
31
45.20 cm3/mol   
4
Adjacent Atomic Numbers
  
  
Previous Element
Mercury
  
Francium
  
Next Element
Lead
  
Actinium
  
Valence Electron Potential
9.60 (-eV)   
99+
20.10 (-eV)   
99+
Lattice Constant
345.66 pm   
99+
514.80 pm   
13
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.60   
6
Not Available   
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