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Atomic Structure of Barium and Thallium

Barium
Thallium
Atomic Structure of Thallium and Barium


Atomic Properties
Atomic Number
56   
99+
81   
35
Electron Configuration
[Xe] 6s2   
[Xe] 4f14 5d10 6s2 6p1   
Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
56   
99+
81   
35
Number of Neutrons
81   
99+
123   
20
Number of Electrons
56   
99+
81   
35
Radius of an Atom
  
  
Atomic Radius
222.00 pm   
4
170.00 pm   
22
Covalent Radius
215.00 pm   
5
145.00 pm   
39
Van der Waals Radius
268.00 pm   
6
196.00 pm   
30
Atomic Weight
137.33 amu   
99+
204.38 amu   
31
Atomic Volume
39.24 cm3/mol   
5
17.20 cm3/mol   
31
Adjacent Atomic Numbers
  
  
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Cesium
  
Mercury
  
Next Element
Lanthanum
  
Lead
  
Valence Electron Potential
21.30 (-eV)   
99+
9.60 (-eV)   
99+
Lattice Constant
502.80 pm   
15
345.66 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.60   
6
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