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Atomic Structure of Erbium and Iridium


Atomic Structure of Iridium and Erbium


Atomic Properties

Atomic Number
68   
99+
77   
39

Electron Configuration
[Xe] 4f12 6s2   
[Xe] 4f14 5d7 6s2   

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

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

Atom
  
  

Number of Protons
68   
99+
74   
99+

Number of Neutrons
99   
33
110   
27

Number of Electrons
68   
99+
74   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
136.00 pm   
99+

Covalent Radius
189.00 pm   
19
141.00 pm   
99+

Van der Waals Radius
Not Available   
202.00 pm   
27

Atomic Weight
167.26 amu   
99+
192.22 amu   
34

Atomic Volume
18.40 cm3/mol   
25
9.53 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

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Holmium
  
Osmium
  

Next Element
Thulium
  
Platinum
  

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

Lattice Constant
355.88 pm   
39
383.90 pm   
26

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

Lattice C/A Ratio
1.57   
17
Not Available   

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