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Atomic Structure of Protactinium and Lutetium

Protactinium
Lutetium
Atomic Structure of Lutetium and Protactinium


Atomic Properties
Atomic Number
91   
27
71   
99+
Electron Configuration
[Rn] 5f2 6d1 7s2   
[Xe] 6s2 4f14 5d1   
Crystal Structure
Tetragonal (TETR)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
91   
27
71   
99+
Number of Neutrons
122   
21
104   
30
Number of Electrons
91   
27
71   
99+
Radius of an Atom
  
  
Atomic Radius
163.00 pm   
25
174.00 pm   
20
Covalent Radius
200.00 pm   
11
187.00 pm   
20
Van der Waals Radius
243.00 pm   
11
221.00 pm   
22
Atomic Weight
231.04 amu   
24
174.97 amu   
40
Atomic Volume
15.00 cm3/mol   
34
17.78 cm3/mol   
30
Adjacent Atomic Numbers
  
  
Previous Element
Thorium
  
Ytterbium
  
Next Element
Uranium
  
Hafnium
  
Valence Electron Potential
92.00 (-eV)   
11
50.90 (-eV)   
26
Lattice Constant
392.50 pm   
23
350.31 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.59   
10
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