Home

Transition Metals + -

Actinide Metals + -

Lanthanide Metals + -

Post-Transition Metals + -

Alkaline Earth Metals + -

Compare Metals


Atomic Structure of Protactinium and Iridium


Atomic Structure of Iridium and Protactinium


Atomic Properties

Atomic Number
91   
27
77   
39

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

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

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

Atom
  
  

Number of Protons
91   
27
74   
99+

Number of Neutrons
122   
21
110   
27

Number of Electrons
91   
27
74   
99+

Radius of an Atom
  
  

Atomic Radius
163.00 pm   
25
136.00 pm   
99+

Covalent Radius
200.00 pm   
11
141.00 pm   
99+

Van der Waals Radius
243.00 pm   
11
202.00 pm   
27

Atomic Weight
231.04 amu   
24
192.22 amu   
34

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

Adjacent Atomic Numbers
  
  

Previous Element
Thorium
  
Osmium
  

Next Element
Uranium
  
Platinum
  

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

Lattice Constant
392.50 pm   
23
383.90 pm   
26

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

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical >>
<< Chemical

Compare Actinide Series

Actinide Metals

Actinide Metals

» More Actinide Metals

Compare Actinide Series

» More Compare Actinide Series