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Atomic Structure of Iridium and Hafnium


Atomic Structure of Hafnium and Iridium


Atomic Properties

Atomic Number
77   
39
72   
99+

Electron Configuration
[Xe] 4f14 5d7 6s2   
[Xe] 4f14 5d2 6s2   

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

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

Atom
  
  

Number of Protons
74   
99+
72   
99+

Number of Neutrons
110   
27
106   
29

Number of Electrons
74   
99+
72   
99+

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
159.00 pm   
28

Covalent Radius
141.00 pm   
99+
175.00 pm   
23

Van der Waals Radius
202.00 pm   
27
200.00 pm   
28

Atomic Weight
192.22 amu   
34
178.49 amu   
39

Atomic Volume
9.53 cm3/mol   
99+
13.60 cm3/mol   
38

Adjacent Atomic Numbers
  
  

Previous Element
Osmium
  
Lutetium
  

Next Element
Platinum
  
Tantalum
  

Valence Electron Potential
140.00 (-eV)   
5
81.00 (-eV)   
16

Lattice Constant
383.90 pm   
26
319.64 pm   
99+

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

Lattice C/A Ratio
Not Available   
1.58   
12

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