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Atomic Structure of Iridium and Terbium


Atomic Structure of Terbium and Iridium


Atomic Properties

Atomic Number
77   
39
65   
99+

Electron Configuration
[Xe] 4f14 5d7 6s2   
[Xe] 4f9 6s2   

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

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

Atom
  
  

Number of Protons
74   
99+
65   
99+

Number of Neutrons
110   
27
94   
36

Number of Electrons
74   
99+
65   
99+

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
177.00 pm   
17

Covalent Radius
141.00 pm   
99+
194.00 pm   
16

Van der Waals Radius
202.00 pm   
27
221.00 pm   
22

Atomic Weight
192.22 amu   
34
158.93 amu   
99+

Atomic Volume
9.53 cm3/mol   
99+
19.20 cm3/mol   
22

Adjacent Atomic Numbers
  
  

Previous Element
Osmium
  
Gadolinium
  

Next Element
Platinum
  
Dysprosium
  

Valence Electron Potential
140.00 (-eV)   
5
46.80 (-eV)   
33

Lattice Constant
383.90 pm   
26
360.10 pm   
36

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

Lattice C/A Ratio
Not Available   
1.58   
13

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