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Atomic Structure of Iridium and Protactinium


Atomic Structure of Protactinium and Iridium


Atomic Properties

Atomic Number
77   
39
91   
27

Electron Configuration
[Xe] 4f14 5d7 6s2   
[Rn] 5f2 6d1 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Tetragonal (TETR)   

Crystal Lattice
FCC-Crystal-Structure-of-Iridium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   

Atom
  
  

Number of Protons
74   
99+
91   
27

Number of Neutrons
110   
27
122   
21

Number of Electrons
74   
99+
91   
27

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
163.00 pm   
25

Covalent Radius
141.00 pm   
99+
200.00 pm   
11

Van der Waals Radius
202.00 pm   
27
243.00 pm   
11

Atomic Weight
192.22 amu   
34
231.04 amu   
24

Atomic Volume
9.53 cm3/mol   
99+
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

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Osmium
  
Thorium
  

Next Element
Platinum
  
Uranium
  

Valence Electron Potential
140.00 (-eV)   
5
92.00 (-eV)   
11

Lattice Constant
383.90 pm   
26
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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