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Atomic Structure of Iridium and Thulium

Iridium
Thulium
Atomic Structure of Thulium and Iridium


Atomic
Atomic Number
77  
39
69  
99+
Electron Configuration
[Xe] 4f14 5d7 6s2  
[Xe] 4f13 6s2  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Iridium.jpg#100  
HCP-Crystal-Structure-of-Thulium.jpg#100  
Atom
  
  
Number of Protons
74  
99+
69  
99+
Number of Neutrons
110  
28
100  
33
Number of Electrons
74  
99+
69  
99+
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
176.00 pm  
20
Covalent Radius
141.00 pm  
99+
160.00 pm  
32
Van der Waals Radius
202.00 pm  
34
227.00 pm  
26
Atomic Weight
192.22 amu  
34
168.93 amu  
99+
Atomic Volume
9.53 cm3/mol  
99+
18.10 cm3/mol  
40
Adjacent Atomic Numbers
  
  
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Osmium
  
Erbium
  
Next Element
Platinum
  
Ytterbium
  
Valence Electron Potential
140.00 (-eV)  
5
49.70 (-eV)  
29
Lattice Constant
383.90 pm  
29
353.75 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.58  
35
1.57  
40
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