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Atomic Structure of Thallium and 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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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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