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Atomic Structure of Iridium and Technetium


Atomic Structure of Technetium and Iridium


Atomic Properties

Atomic Number
77   
39
43   
99+

Electron Configuration
[Xe] 4f14 5d7 6s2   
[Kr] 4d5 5s2   

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

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

Atom
  
  

Number of Protons
74   
99+
43   
99+

Number of Neutrons
110   
27
55   
99+

Number of Electrons
74   
99+
43   
99+

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
136.00 pm   
99+

Covalent Radius
141.00 pm   
99+
147.00 pm   
37

Van der Waals Radius
202.00 pm   
27
200.00 pm   
28

Atomic Weight
192.22 amu   
34
98.00 amu   
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Osmium
  
Molybdenum
  

Next Element
Platinum
  
Ruthenium
  

Valence Electron Potential
140.00 (-eV)   
5
180.00 (-eV)   
3

Lattice Constant
383.90 pm   
26
273.50 pm   
99+

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

Lattice C/A Ratio
Not Available   
1.60   
5

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