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Atomic Structure of Scandium and Technetium

Scandium
Technetium
Atomic Structure of Technetium and Scandium


Atomic Properties
Atomic Number
21   
99+
43   
99+
Electron Configuration
[Ar] 3d1 4s2   
[Kr] 4d5 5s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Scandium.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   
Atom
  
  
Number of Protons
21   
99+
43   
99+
Number of Neutrons
24   
99+
55   
99+
Number of Electrons
21   
99+
43   
99+
Radius of an Atom
  
  
Atomic Radius
162.00 pm   
26
136.00 pm   
99+
Covalent Radius
170.00 pm   
25
147.00 pm   
37
Van der Waals Radius
211.00 pm   
25
200.00 pm   
28
Atomic Weight
44.96 amu   
99+
98.00 amu   
99+
Atomic Volume
15.00 cm3/mol   
34
8.50 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Calcium
  
Molybdenum
  
Next Element
Titanium
  
Ruthenium
  
Valence Electron Potential
58.00 (-eV)   
24
180.00 (-eV)   
3
Lattice Constant
330.90 pm   
99+
273.50 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   
5
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