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Atomic Structure of Iridium and Thulium


Atomic Structure of Thulium and Iridium


Atomic Properties

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   
27
100   
32

Number of Electrons
74   
99+
69   
99+

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
176.00 pm   
18

Covalent Radius
141.00 pm   
99+
160.00 pm   
30

Van der Waals Radius
202.00 pm   
27
Not Available   

Atomic Weight
192.22 amu   
34
168.93 amu   
99+

Atomic Volume
9.53 cm3/mol   
99+
18.10 cm3/mol   
28

Adjacent Atomic Numbers
  
  

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Osmium
  
Erbium
  

Next Element
Platinum
  
Ytterbium
  

Valence Electron Potential
140.00 (-eV)   
5
49.70 (-eV)   
28

Lattice Constant
383.90 pm   
26
353.75 pm   
40

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

Lattice C/A Ratio
Not Available   
1.57   
17

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