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Atomic Structure of Lutetium and Americium

Lutetium
Americium
Atomic Structure of Americium and Lutetium


Atomic Properties
Atomic Number
71   
99+
95   
23
Electron Configuration
[Xe] 6s2 4f14 5d1   
[Rn] 5f7 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   
Atom
  
  
Number of Protons
71   
99+
95   
23
Number of Neutrons
104   
30
148   
12
Number of Electrons
71   
99+
95   
23
Radius of an Atom
  
  
Atomic Radius
174.00 pm   
20
173.00 pm   
21
Covalent Radius
187.00 pm   
20
180.00 pm   
21
Van der Waals Radius
221.00 pm   
22
244.00 pm   
10
Atomic Weight
174.97 amu   
40
243.00 amu   
20
Atomic Volume
17.78 cm3/mol   
30
17.86 cm3/mol   
29
Adjacent Atomic Numbers
  
  
Previous Element
Ytterbium
  
Plutonium
  
Next Element
Hafnium
  
Curium
  
Valence Electron Potential
50.90 (-eV)   
26
44.00 (-eV)   
40
Lattice Constant
350.31 pm   
99+
346.81 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.59   
10
Not Available   
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