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Atomic Structure of Cerium and Iridium


Atomic Structure of Iridium and Cerium


Atomic Properties

Atomic Number
58   
99+
77   
39

Electron Configuration
[Xe] 4f1 5d1 6s2   
[Xe] 4f14 5d7 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
DHCP-Crystal-Structure-of-Cerium.jpg#100   
FCC-Crystal-Structure-of-Iridium.jpg#100   

Atom
  
  

Number of Protons
58   
99+
74   
99+

Number of Neutrons
82   
99+
110   
27

Number of Electrons
58   
99+
74   
99+

Radius of an Atom
  
  

Atomic Radius
181.80 pm   
12
136.00 pm   
99+

Covalent Radius
204.00 pm   
8
141.00 pm   
99+

Van der Waals Radius
235.00 pm   
17
202.00 pm   
27

Atomic Weight
140.12 amu   
99+
192.22 amu   
34

Atomic Volume
20.67 cm3/mol   
17
9.53 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Lanthanum
  
Osmium
  

Next Element
Platinum
  

Valence Electron Potential
41.78 (-eV)   
99+
140.00 (-eV)   
5

Lattice Constant
362.00 pm   
34
383.90 pm   
26

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

Lattice C/A Ratio
Not Available   
Not Available   

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