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Atomic Structure of Thallium and Scandium

Thallium
Scandium
Atomic Structure of Scandium and Thallium


Atomic Properties
Atomic Number
81   
35
21   
99+
Electron Configuration
[Xe] 4f14 5d10 6s2 6p1   
[Ar] 3d1 4s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Scandium.jpg#100   
Atom
  
  
Number of Protons
81   
35
21   
99+
Number of Neutrons
123   
20
24   
99+
Number of Electrons
81   
35
21   
99+
Radius of an Atom
  
  
Atomic Radius
170.00 pm   
22
162.00 pm   
26
Covalent Radius
145.00 pm   
39
170.00 pm   
25
Van der Waals Radius
196.00 pm   
30
211.00 pm   
25
Atomic Weight
204.38 amu   
31
44.96 amu   
99+
Atomic Volume
17.20 cm3/mol   
31
15.00 cm3/mol   
34
Adjacent Atomic Numbers
  
  
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Mercury
  
Calcium
  
Next Element
Lead
  
Titanium
  
Valence Electron Potential
9.60 (-eV)   
99+
58.00 (-eV)   
24
Lattice Constant
345.66 pm   
99+
330.90 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.60   
6
1.59   
7
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