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Atomic Structure of Promethium and Gallium

Promethium
Gallium
Atomic Structure of Gallium and Promethium


Atomic Properties
Atomic Number
61   
99+
31   
99+
Electron Configuration
[Xe] 4f5 6s2   
[Ar] 3d10 4s2 4p1   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Orthorhombic (ORTH)   
Crystal Lattice
DHCP-Crystal-Structure-of-Promethium.jpg#100   
ORTH-Crystal-Structure-of-Gallium.jpg#100   
Atom
  
  
Number of Protons
61   
99+
31   
99+
Number of Neutrons
84   
40
39   
99+
Number of Electrons
61   
99+
31   
99+
Radius of an Atom
  
  
Atomic Radius
183.00 pm   
10
135.00 pm   
99+
Covalent Radius
199.00 pm   
12
122.00 pm   
99+
Van der Waals Radius
236.00 pm   
16
187.00 pm   
32
Atomic Weight
145.00 amu   
99+
69.72 amu   
99+
Atomic Volume
22.39 cm3/mol   
12
11.80 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Neodymium
  
Zinc
  
Next Element
Samarium
  
Rubidium
  
Valence Electron Potential
44.10 (-eV)   
39
69.70 (-eV)   
19
Lattice Constant
Not Available   
451.97 pm   
18
Lattice Angles
Unknown   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
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