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Atomic Structure of Gallium and Promethium


Atomic Structure of Promethium and Gallium


Atomic Properties

Atomic Number
31   
99+
61   
99+

Electron Configuration
[Ar] 3d10 4s2 4p1   
[Xe] 4f5 6s2   

Crystal Structure
Orthorhombic (ORTH)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
ORTH-Crystal-Structure-of-Gallium.jpg#100   
DHCP-Crystal-Structure-of-Promethium.jpg#100   

Atom
  
  

Number of Protons
31   
99+
61   
99+

Number of Neutrons
39   
99+
84   
40

Number of Electrons
31   
99+
61   
99+

Radius of an Atom
  
  

Atomic Radius
135.00 pm   
99+
183.00 pm   
10

Covalent Radius
122.00 pm   
99+
199.00 pm   
12

Van der Waals Radius
187.00 pm   
32
236.00 pm   
16

Atomic Weight
69.72 amu   
99+
145.00 amu   
99+

Atomic Volume
11.80 cm3/mol   
99+
22.39 cm3/mol   
12

Adjacent Atomic Numbers
  
  

Previous Element
Zinc
  
Neodymium
  

Next Element
Rubidium
  
Samarium
  

Valence Electron Potential
69.70 (-eV)   
19
44.10 (-eV)   
39

Lattice Constant
451.97 pm   
18
Not Available   

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

Lattice C/A Ratio
Not Available   
Not Available   

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