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Atomic Structure of Gallium and Americium

Gallium
Americium
Atomic Structure of Americium and Gallium


Atomic Properties
Atomic Number
31   
99+
95   
23
Electron Configuration
[Ar] 3d10 4s2 4p1   
[Rn] 5f7 7s2   
Crystal Structure
Orthorhombic (ORTH)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
ORTH-Crystal-Structure-of-Gallium.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   
Atom
  
  
Number of Protons
31   
99+
95   
23
Number of Neutrons
39   
99+
148   
12
Number of Electrons
31   
99+
95   
23
Radius of an Atom
  
  
Atomic Radius
135.00 pm   
99+
173.00 pm   
21
Covalent Radius
122.00 pm   
99+
180.00 pm   
21
Van der Waals Radius
187.00 pm   
32
244.00 pm   
10
Atomic Weight
69.72 amu   
99+
243.00 amu   
20
Atomic Volume
11.80 cm3/mol   
99+
17.86 cm3/mol   
29
Adjacent Atomic Numbers
  
  
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Zinc
  
Plutonium
  
Next Element
Rubidium
  
Curium
  
Valence Electron Potential
69.70 (-eV)   
19
44.00 (-eV)   
40
Lattice Constant
451.97 pm   
18
346.81 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
Not Available   
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