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Atomic Structure of Samarium and Iridium


Atomic Structure of Iridium and Samarium


Atomic Properties

Atomic Number
62   
99+
77   
39

Electron Configuration
[Xe] 4f6 6s2   
[Xe] 4f14 5d7 6s2   

Crystal Structure
Rhombohedral (RHO)   
Face Centered Cubic (FCC)   

Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100   
FCC-Crystal-Structure-of-Iridium.jpg#100   

Atom
  
  

Number of Protons
62   
99+
74   
99+

Number of Neutrons
88   
39
110   
27

Number of Electrons
62   
99+
74   
99+

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
136.00 pm   
99+

Covalent Radius
198.00 pm   
13
141.00 pm   
99+

Van der Waals Radius
229.00 pm   
20
202.00 pm   
27

Atomic Weight
150.36 amu   
99+
192.22 amu   
34

Atomic Volume
19.95 cm3/mol   
19
9.53 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Promethium
  
Osmium
  

Next Element
Europium
  
Platinum
  

Valence Electron Potential
44.80 (-eV)   
37
140.00 (-eV)   
5

Lattice Constant
362.10 pm   
33
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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