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Atomic Structure of Tantalum and Iridium


Atomic Structure of Iridium and Tantalum


Atomic Properties

Atomic Number
73   
99+
77   
39

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

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

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

Atom
  
  

Number of Protons
73   
99+
74   
99+

Number of Neutrons
108   
28
110   
27

Number of Electrons
73   
99+
74   
99+

Radius of an Atom
  
  

Atomic Radius
146.00 pm   
35
136.00 pm   
99+

Covalent Radius
170.00 pm   
25
141.00 pm   
99+

Van der Waals Radius
200.00 pm   
28
202.00 pm   
27

Atomic Weight
180.95 amu   
38
192.22 amu   
34

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

Adjacent Atomic Numbers
  
  

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Hafnium
  
Osmium
  

Next Element
Tungsten
  
Platinum
  

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

Lattice Constant
330.13 pm   
99+
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   

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