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Atomic Structure of Scandium and Hafnium

Scandium
Hafnium
Atomic Structure of Hafnium and Scandium


Atomic Properties
Atomic Number
21   
99+
72   
99+
Electron Configuration
[Ar] 3d1 4s2   
[Xe] 4f14 5d2 6s2   
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+
72   
99+
Number of Neutrons
24   
99+
106   
29
Number of Electrons
21   
99+
72   
99+
Radius of an Atom
  
  
Atomic Radius
162.00 pm   
26
159.00 pm   
28
Covalent Radius
170.00 pm   
25
175.00 pm   
23
Van der Waals Radius
211.00 pm   
25
200.00 pm   
28
Atomic Weight
44.96 amu   
99+
178.49 amu   
39
Atomic Volume
15.00 cm3/mol   
34
13.60 cm3/mol   
38
Adjacent Atomic Numbers
  
  
Previous Element
Calcium
  
Lutetium
  
Next Element
Titanium
  
Tantalum
  
Valence Electron Potential
58.00 (-eV)   
24
81.00 (-eV)   
16
Lattice Constant
330.90 pm   
99+
319.64 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
1.58   
12
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