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Atomic Structure of Praseodymium and Iridium


Atomic Structure of Iridium and Praseodymium


Atomic Properties

Atomic Number
59   
99+
77   
39

Electron Configuration
[Xe] 4f3 6s2   
[Xe] 4f14 5d7 6s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100   
FCC-Crystal-Structure-of-Iridium.jpg#100   

Atom
  
  

Number of Protons
59   
99+
74   
99+

Number of Neutrons
82   
99+
110   
27

Number of Electrons
59   
99+
74   
99+

Radius of an Atom
  
  

Atomic Radius
182.00 pm   
11
136.00 pm   
99+

Covalent Radius
203.00 pm   
9
141.00 pm   
99+

Van der Waals Radius
239.00 pm   
14
202.00 pm   
27

Atomic Weight
140.91 amu   
99+
192.22 amu   
34

Atomic Volume
20.80 cm3/mol   
15
9.53 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Cerium
  
Osmium
  

Next Element
Neodymium
  
Platinum
  

Valence Electron Potential
42.64 (-eV)   
99+
140.00 (-eV)   
5

Lattice Constant
367.25 pm   
29
383.90 pm   
26

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
1.61   
4
Not Available   

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