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Atomic Structure of Iridium and Tantalum


Atomic Structure of Tantalum and Iridium


Atomic Properties

Atomic Number
77   
39
73   
99+

Electron Configuration
[Xe] 4f14 5d7 6s2   
[Xe] 4f14 5d3 6s2   

Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   

Crystal Lattice
FCC-Crystal-Structure-of-Iridium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
74   
99+
73   
99+

Number of Neutrons
110   
27
108   
28

Number of Electrons
74   
99+
73   
99+

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
146.00 pm   
35

Covalent Radius
141.00 pm   
99+
170.00 pm   
25

Van der Waals Radius
202.00 pm   
27
200.00 pm   
28

Atomic Weight
192.22 amu   
34
180.95 amu   
38

Atomic Volume
9.53 cm3/mol   
99+
10.90 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Osmium
  
Hafnium
  

Next Element
Platinum
  
Tungsten
  

Valence Electron Potential
140.00 (-eV)   
5
110.00 (-eV)   
7

Lattice Constant
383.90 pm   
26
330.13 pm   
99+

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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