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Atomic Structure of Thallium and Actinium

Thallium
Actinium
Atomic Structure of Actinium and Thallium


Atomic Properties
Atomic Number
81   
35
89   
29
Electron Configuration
[Xe] 4f14 5d10 6s2 6p1   
[Rn] 6d1 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Actinium.jpg#100   
Atom
  
  
Number of Protons
81   
35
89   
29
Number of Neutrons
123   
20
138   
16
Number of Electrons
81   
35
89   
29
Radius of an Atom
  
  
Atomic Radius
170.00 pm   
22
195.00 pm   
7
Covalent Radius
145.00 pm   
39
Not Available   
Van der Waals Radius
196.00 pm   
30
Not Available   
Atomic Weight
204.38 amu   
31
227.00 amu   
25
Atomic Volume
17.20 cm3/mol   
31
22.54 cm3/mol   
11
Adjacent Atomic Numbers
  
  
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Mercury
  
Radium
  
Next Element
Lead
  
Thorium
  
Valence Electron Potential
9.60 (-eV)   
99+
38.60 (-eV)   
99+
Lattice Constant
345.66 pm   
99+
567.00 pm   
8
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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