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Atomic Structure of Scandium and Thallium

Scandium
Thallium
Atomic Structure of Thallium and Scandium


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