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Atomic Structure of Protactinium and Zirconium


Atomic Structure of Zirconium and Protactinium


Atomic Properties

Atomic Number
91   
27
40   
99+

Electron Configuration
[Rn] 5f2 6d1 7s2   
[Kr] 4d2 5s2   

Crystal Structure
Tetragonal (TETR)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
HCP-Crystal-Structure-of-Zirconium.jpg#100   

Atom
  
  

Number of Protons
91   
27
40   
99+

Number of Neutrons
122   
21
51   
99+

Number of Electrons
91   
27
40   
99+

Radius of an Atom
  
  

Atomic Radius
163.00 pm   
25
160.00 pm   
27

Covalent Radius
200.00 pm   
11
175.00 pm   
23

Van der Waals Radius
243.00 pm   
11
200.00 pm   
28

Atomic Weight
231.04 amu   
24
91.22 amu   
99+

Atomic Volume
15.00 cm3/mol   
34
14.10 cm3/mol   
36

Adjacent Atomic Numbers
  
  

Previous Element
Thorium
  
Yttrium
  

Next Element
Uranium
  
Niobium
  

Valence Electron Potential
92.00 (-eV)   
11
80.00 (-eV)   
18

Lattice Constant
392.50 pm   
23
323.20 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   
8

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