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Atomic Structure of Zirconium and Promethium

Zirconium
Promethium
Atomic Structure of Promethium and Zirconium


Atomic Properties
Atomic Number
40   
99+
61   
99+
Electron Configuration
[Kr] 4d2 5s2   
[Xe] 4f5 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Zirconium.jpg#100   
DHCP-Crystal-Structure-of-Promethium.jpg#100   
Atom
  
  
Number of Protons
40   
99+
61   
99+
Number of Neutrons
51   
99+
84   
40
Number of Electrons
40   
99+
61   
99+
Radius of an Atom
  
  
Atomic Radius
160.00 pm   
27
183.00 pm   
10
Covalent Radius
175.00 pm   
23
199.00 pm   
12
Van der Waals Radius
200.00 pm   
28
236.00 pm   
16
Atomic Weight
91.22 amu   
99+
145.00 amu   
99+
Atomic Volume
14.10 cm3/mol   
36
22.39 cm3/mol   
12
Adjacent Atomic Numbers
  
  
Previous Element
Yttrium
  
Neodymium
  
Next Element
Niobium
  
Samarium
  
Valence Electron Potential
80.00 (-eV)   
18
44.10 (-eV)   
39
Lattice Constant
323.20 pm   
99+
Not Available   
Lattice Angles
π/2, π/2, 2 π/3   
Unknown   
Lattice C/A Ratio
1.59   
8
Not Available   
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