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Atomic Structure of Thulium and Iridium


Atomic Structure of Iridium and Thulium


Atomic

Atomic Number
69  
99+
77  
39

Electron Configuration
[Xe] 4f13 6s2  
[Xe] 4f14 5d7 6s2  

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

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

Atom
  
  

Number of Protons
69  
99+
74  
99+

Number of Neutrons
100  
33
110  
28

Number of Electrons
69  
99+
74  
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
136.00 pm  
99+

Covalent Radius
160.00 pm  
32
141.00 pm  
99+

Van der Waals Radius
227.00 pm  
26
202.00 pm  
34

Atomic Weight
168.93 amu  
99+
192.22 amu  
34

Atomic Volume
18.10 cm3/mol  
40
9.53 cm3/mol  
99+

Adjacent Atomic Numbers
  
  

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Osmium
  

Next Element
Ytterbium
  
Platinum
  

Valence Electron Potential
49.70 (-eV)  
29
140.00 (-eV)  
5

Lattice Constant
353.75 pm  
99+
383.90 pm  
29

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

Lattice C/A Ratio
1.57  
40
1.58  
35

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