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Atomic Structure of Europium and Americium


Atomic Structure of Americium and Europium


Atomic Properties

Atomic Number
63   
99+
95   
23

Electron Configuration
[Xe] 4f7 6s2   
[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
63   
99+
95   
23

Number of Neutrons
89   
38
148   
12

Number of Electrons
63   
99+
95   
23

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
173.00 pm   
21

Covalent Radius
198.00 pm   
13
180.00 pm   
21

Van der Waals Radius
233.00 pm   
18
244.00 pm   
10

Atomic Weight
151.96 amu   
99+
243.00 amu   
20

Atomic Volume
28.90 cm3/mol   
8
17.86 cm3/mol   
29

Adjacent Atomic Numbers
  
  

Previous Element
Samarium
  
Plutonium
  

Next Element
Gadolinium
  
Curium
  

Valence Electron Potential
45.60 (-eV)   
35
44.00 (-eV)   
40

Lattice Constant
458.10 pm   
17
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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