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Atomic Structure of Lutetium and Iridium


Atomic Structure of Iridium and Lutetium


Atomic Properties

Atomic Number
71   
99+
77   
39

Electron Configuration
[Xe] 6s2 4f14 5d1   
[Xe] 4f14 5d7 6s2   

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

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Iridium.jpg#100   

Atom
  
  

Number of Protons
71   
99+
74   
99+

Number of Neutrons
104   
30
110   
27

Number of Electrons
71   
99+
74   
99+

Radius of an Atom
  
  

Atomic Radius
174.00 pm   
20
136.00 pm   
99+

Covalent Radius
187.00 pm   
20
141.00 pm   
99+

Van der Waals Radius
221.00 pm   
22
202.00 pm   
27

Atomic Weight
174.97 amu   
40
192.22 amu   
34

Atomic Volume
17.78 cm3/mol   
30
9.53 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Ytterbium
  
Osmium
  

Next Element
Hafnium
  
Platinum
  

Valence Electron Potential
50.90 (-eV)   
26
140.00 (-eV)   
5

Lattice Constant
350.31 pm   
99+
383.90 pm   
26

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

Lattice C/A Ratio
1.59   
10
Not Available   

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