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Atomic Structure of Scandium and Tantalum

Scandium
Tantalum
Atomic Structure of Tantalum and Scandium


Atomic Properties
Atomic Number
21   
99+
73   
99+
Electron Configuration
[Ar] 3d1 4s2   
[Xe] 4f14 5d3 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Scandium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
21   
99+
73   
99+
Number of Neutrons
24   
99+
108   
28
Number of Electrons
21   
99+
73   
99+
Radius of an Atom
  
  
Atomic Radius
162.00 pm   
26
146.00 pm   
35
Covalent Radius
170.00 pm   
25
170.00 pm   
25
Van der Waals Radius
211.00 pm   
25
200.00 pm   
28
Atomic Weight
44.96 amu   
99+
180.95 amu   
38
Atomic Volume
15.00 cm3/mol   
34
10.90 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Calcium
  
Hafnium
  
Next Element
Titanium
  
Tungsten
  
Valence Electron Potential
58.00 (-eV)   
24
110.00 (-eV)   
7
Lattice Constant
330.90 pm   
99+
330.13 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.59   
7
Not Available   
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