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Atomic Structure of Iridium and Technetium

Iridium
Technetium
Atomic Structure of Technetium and Iridium


Atomic
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  
28
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  
39
Van der Waals Radius
202.00 pm  
34
200.00 pm  
35
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  
29
273.50 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.58  
35
1.60  
21
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