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Atomic Structure of Technetium and Scandium


Atomic Structure of Scandium and Technetium


Atomic Properties

Atomic Number
43   
99+
21   
99+

Electron Configuration
[Kr] 4d5 5s2   
[Ar] 3d1 4s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100   
HCP-Crystal-Structure-of-Scandium.jpg#100   

Atom
  
  

Number of Protons
43   
99+
21   
99+

Number of Neutrons
55   
99+
24   
99+

Number of Electrons
43   
99+
21   
99+

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
162.00 pm   
26

Covalent Radius
147.00 pm   
37
170.00 pm   
25

Van der Waals Radius
200.00 pm   
28
211.00 pm   
25

Atomic Weight
98.00 amu   
99+
44.96 amu   
99+

Atomic Volume
8.50 cm3/mol   
99+
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

Previous Element
Molybdenum
  
Calcium
  

Next Element
Ruthenium
  
Titanium
  

Valence Electron Potential
180.00 (-eV)   
3
58.00 (-eV)   
24

Lattice Constant
273.50 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   
5
1.59   
7

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