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Atomic Structure of Thallium and Yttrium

Thallium
Yttrium
Atomic Structure of Yttrium and Thallium


Atomic Properties
Atomic Number
81   
35
39   
99+
Electron Configuration
[Xe] 4f14 5d10 6s2 6p1   
[Kr] 4d1 5s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Yttrium.jpg#100   
Atom
  
  
Number of Protons
81   
35
39   
99+
Number of Neutrons
123   
20
50   
99+
Number of Electrons
81   
35
39   
99+
Radius of an Atom
  
  
Atomic Radius
170.00 pm   
22
180.00 pm   
14
Covalent Radius
145.00 pm   
39
190.00 pm   
18
Van der Waals Radius
196.00 pm   
30
200.00 pm   
28
Atomic Weight
204.38 amu   
31
88.91 amu   
99+
Atomic Volume
17.20 cm3/mol   
31
19.80 cm3/mol   
21
Adjacent Atomic Numbers
  
  
Previous Element
Mercury
  
Strontium
  
Next Element
Lead
  
Zirconium
  
Valence Electron Potential
9.60 (-eV)   
99+
48.00 (-eV)   
30
Lattice Constant
345.66 pm   
99+
364.74 pm   
31
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.60   
6
1.57   
16
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