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Atomic Structure of Iridium and Neptunium


Atomic Structure of Neptunium and Iridium


Atomic Properties

Atomic Number
77   
39
93   
25

Electron Configuration
[Xe] 4f14 5d7 6s2   
[Rn] 5f4 6d1 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Orthorhombic (ORTH)   

Crystal Lattice
FCC-Crystal-Structure-of-Iridium.jpg#100   
ORTH-Crystal-Structure-of-Neptunium.jpg#100   

Atom
  
  

Number of Protons
74   
99+
93   
25

Number of Neutrons
110   
27
144   
14

Number of Electrons
74   
99+
93   
25

Radius of an Atom
  
  

Atomic Radius
136.00 pm   
99+
155.00 pm   
30

Covalent Radius
141.00 pm   
99+
190.00 pm   
18

Van der Waals Radius
202.00 pm   
27
221.00 pm   
22

Atomic Weight
192.22 amu   
34
237.00 amu   
22

Atomic Volume
9.53 cm3/mol   
99+
11.62 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Osmium
  
Uranium
  

Next Element
Platinum
  
Plutonium
  

Valence Electron Potential
140.00 (-eV)   
5
96.00 (-eV)   
9

Lattice Constant
383.90 pm   
26
666.30 pm   
3

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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