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Atomic Structure of Cobalt and Americium

Cobalt
Americium
Atomic Structure of Americium and Cobalt


Atomic Properties
Atomic Number
22   
99+
95   
23
Electron Configuration
[Ar] 3d2 4s2   
[Rn] 5f7 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Cobalt.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   
Atom
  
  
Number of Protons
22   
99+
95   
23
Number of Neutrons
26   
99+
148   
12
Number of Electrons
22   
99+
95   
23
Radius of an Atom
  
  
Atomic Radius
147.00 pm   
34
173.00 pm   
21
Covalent Radius
160.00 pm   
30
180.00 pm   
21
Van der Waals Radius
200.00 pm   
28
244.00 pm   
10
Atomic Weight
47.87 amu   
99+
243.00 amu   
20
Atomic Volume
10.64 cm3/mol   
99+
17.86 cm3/mol   
29
Adjacent Atomic Numbers
  
  
Previous Element
Iron
  
Plutonium
  
Next Element
Nickel
  
Curium
  
Valence Electron Potential
95.20 (-eV)   
10
44.00 (-eV)   
40
Lattice Constant
295.08 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
Not Available   
Not Available   
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