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Atomic Structure of Lutetium and Tantalum

Lutetium
Tantalum
Atomic Structure of Tantalum and Lutetium


Atomic Properties
Atomic Number
71   
99+
73   
99+
Electron Configuration
[Xe] 6s2 4f14 5d1   
[Xe] 4f14 5d3 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
71   
99+
73   
99+
Number of Neutrons
104   
30
108   
28
Number of Electrons
71   
99+
73   
99+
Radius of an Atom
  
  
Atomic Radius
174.00 pm   
20
146.00 pm   
35
Covalent Radius
187.00 pm   
20
170.00 pm   
25
Van der Waals Radius
221.00 pm   
22
200.00 pm   
28
Atomic Weight
174.97 amu   
40
180.95 amu   
38
Atomic Volume
17.78 cm3/mol   
30
10.90 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Ytterbium
  
Hafnium
  
Next Element
Hafnium
  
Tungsten
  
Valence Electron Potential
50.90 (-eV)   
26
110.00 (-eV)   
7
Lattice Constant
350.31 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   
10
Not Available   
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