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Atomic Structure of Thallium and 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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