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Atomic Structure of Iridium and Radium


Atomic Structure of Radium and Iridium


Atomic Properties

Atomic Number
77   
39
88   
30

Electron Configuration
[Xe] 4f14 5d7 6s2   
[Rn] 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   

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

Atom
  
  

Number of Protons
74   
99+
88   
30

Number of Neutrons
110   
27
138   
16

Number of Electrons
74   
99+
88   
30

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
Not Available   

Covalent Radius
141.00 pm   
99+
221.00 pm   
3

Van der Waals Radius
202.00 pm   
27
283.00 pm   
4

Atomic Weight
192.22 amu   
34
226.00 amu   
26

Atomic Volume
9.53 cm3/mol   
99+
45.20 cm3/mol   
4

Adjacent Atomic Numbers
  
  

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Osmium
  
Francium
  

Next Element
Platinum
  
Actinium
  

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

Lattice Constant
383.90 pm   
26
514.80 pm   
13

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

Lattice C/A Ratio
Not Available   
Not Available   

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