Atomic Structure of Americium and Promethium
Electron Configuration
[Rn] 5f7 7s2
  
[Xe] 4f5 6s2
  
Crystal Structure
Double Hexagonal Close Packed (DHCP)
  
Double Hexagonal Close Packed (DHCP)
  
Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100
  
DHCP-Crystal-Structure-of-Promethium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
145.00 amu
  
99+
Atomic Volume
17.86 cm3/mol
  
29
22.39 cm3/mol
  
12
Adjacent Atomic Numbers
  
  
Valence Electron Potential
44.00 (-eV)
  
40
44.10 (-eV)
  
39
Lattice Constant
Not Available
  
Lattice Angles
π/2, π/2, 2 π/3
  
Unknown
  
Lattice C/A Ratio
Not Available
  
Not Available