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Atomic Structure of Francium and Americium


Atomic Structure of Americium and Francium


Atomic Properties

Atomic Number
87   
31
95   
23

Electron Configuration
[Rn] 7s1   
[Rn] 5f7 7s2   

Crystal Structure
Body Centered Cubic (BCC)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   

Atom
  
  

Number of Protons
87   
31
95   
23

Number of Neutrons
136   
17
148   
12

Number of Electrons
87   
31
95   
23

Radius of an Atom
  
  

Atomic Radius
Not Available   
173.00 pm   
21

Covalent Radius
260.00 pm   
1
180.00 pm   
21

Van der Waals Radius
348.00 pm   
1
244.00 pm   
10

Atomic Weight
223.00 amu   
27
243.00 amu   
20

Atomic Volume
Not Available   
17.86 cm3/mol   
29

Adjacent Atomic Numbers
  
  

Previous Element
Polonium
  
Plutonium
  

Next Element
Radium
  
Curium
  

Valence Electron Potential
8.00 (-eV)   
99+
44.00 (-eV)   
40

Lattice Constant
Not Available   
346.81 pm   
99+

Lattice Angles
NA   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
Not Available   

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