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Atomic Structure of Niobium and Protactinium

Niobium
Protactinium
Atomic Structure of Protactinium and Niobium


Atomic Properties
Atomic Number
41   
99+
91   
27
Electron Configuration
[Kr] 4d4 5s1   
[Rn] 5f2 6d1 7s2   
Crystal Structure
Body Centered Cubic (BCC)   
Tetragonal (TETR)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   
Atom
  
  
Number of Protons
41   
99+
91   
27
Number of Neutrons
52   
99+
122   
21
Number of Electrons
41   
99+
91   
27
Radius of an Atom
  
  
Atomic Radius
146.00 pm   
35
163.00 pm   
25
Covalent Radius
164.00 pm   
28
200.00 pm   
11
Van der Waals Radius
200.00 pm   
28
243.00 pm   
11
Atomic Weight
92.91 amu   
99+
231.04 amu   
24
Atomic Volume
10.87 cm3/mol   
99+
15.00 cm3/mol   
34
Adjacent Atomic Numbers
  
  
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Zirconium
  
Thorium
  
Next Element
Molybdenum
  
Uranium
  
Valence Electron Potential
104.00 (-eV)   
8
92.00 (-eV)   
11
Lattice Constant
330.04 pm   
99+
392.50 pm   
23
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
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