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Atomic Structure of Yttrium and Thallium

Yttrium
Thallium
Atomic Structure of Thallium and Yttrium


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